diff --git a/LEGO1/lego/legoomni/include/legocarbuild.h b/LEGO1/lego/legoomni/include/legocarbuild.h
index 0afb0824..497f57ee 100644
--- a/LEGO1/lego/legoomni/include/legocarbuild.h
+++ b/LEGO1/lego/legoomni/include/legocarbuild.h
@@ -6,6 +6,7 @@
 #include "legoworld.h"
 
 class LegoCarBuildAnimPresenter;
+class LegoControlManagerNotificationParam;
 class LegoEventNotificationParam;
 class MxControlPresenter;
 class MxStillPresenter;
@@ -21,6 +22,7 @@ class LegoVehicleBuildState : public LegoState {
 		e_entering = 1,
 		e_unknown2 = 2,
 		e_cutscene = 3,
+		e_unknown4 = 4,
 		e_exiting = 6
 	};
 
@@ -117,14 +119,16 @@ class LegoCarBuild : public LegoWorld {
 	undefined4 FUN_100244e0(MxLong p_x, MxLong p_y);
 	undefined4 FUN_100246e0(MxLong p_x, MxLong p_y);
 	MxS32 FUN_10024850(MxLong p_x, MxLong p_y);
-	undefined4 FUN_10024890(LegoEventNotificationParam* p_param);
+	undefined4 FUN_10024890(MxParam* p_param2);
 	undefined4 FUN_10024c20(LegoEventNotificationParam* p_param);
 	void FUN_10024ef0();
+	void FUN_10024f30();
 	void FUN_10024f50();
 	void FUN_10024f70(MxBool p_enabled);
 	void SetPresentersEnabled(MxBool p_enabled);
 	void TogglePresentersEnabled();
 	void FUN_100250e0(MxBool p_param);
+	void FUN_10025350(MxS32 p_param);
 	void FUN_10025450();
 	undefined4 FUN_10025720(undefined4 p_param1);
 	MxS32 FUN_10025d70();
@@ -197,7 +201,8 @@ class LegoCarBuild : public LegoWorld {
 	// variable name verified by BETA10 0x1006b219
 	LegoVehicleBuildState* m_buildState; // 0x32c
 
-	undefined4 m_unk0x330; // 0x330
+	// variable name verified by BETA10 0x1006d742
+	undefined4 m_carId; // 0x330
 
 	// variable name verified by BETA10 0x1006cba7
 	LegoGameState::Area m_destLocation; // 0x334
diff --git a/LEGO1/lego/legoomni/include/legocarbuildpresenter.h b/LEGO1/lego/legoomni/include/legocarbuildpresenter.h
index b1233ada..e4b658d0 100644
--- a/LEGO1/lego/legoomni/include/legocarbuildpresenter.h
+++ b/LEGO1/lego/legoomni/include/legocarbuildpresenter.h
@@ -77,15 +77,33 @@ class LegoCarBuildAnimPresenter : public LegoAnimPresenter {
 	MxBool StringEqualsShelf(const LegoChar* p_string);
 	MxBool StringEndsOnY(const LegoChar* p_string);
 	MxBool StringEndsOnZero(const LegoChar* p_string);
+	const LegoChar* GetWiredNameByPartName(const LegoChar* p_name);
+	void FUN_10079dc0(const LegoChar* p_param1, MxS16 p_param2);
 
 	// FUNCTION: BETA10 0x10070180
 	void SetUnknown0xbc(undefined2 p_unk0xbc) { m_unk0xbc = p_unk0xbc; }
 
+	// FUNCTION: BETA10 0x100703b0
+	MxMatrix& GetUnknown0xe0() { return m_unk0xe0; }
+
 	MxBool StringEndsOnW(LegoChar* p_param);
 	MxBool StringEndsOnYOrN(const LegoChar* p_string);
 
 	const BoundingSphere& FUN_10079e20();
 
+	// FUNCTION: BETA10 0x100703e0
+	const LegoChar* GetWiredNameOfLastPlacedPart() { return m_parts[m_placedPartCount].m_wiredName; }
+
+	MxS16 GetNumberOfParts() { return m_numberOfParts; }
+	MxS16 GetPlacedPartCount() { return m_placedPartCount; }
+
+	// FUNCTION: BETA10 0x10070270
+	MxBool AllPartsPlaced()
+	{
+		// this function differs in BETA10
+		return m_placedPartCount == m_numberOfParts;
+	}
+
 	// SYNTHETIC: LEGO1 0x10078660
 	// LegoCarBuildAnimPresenter::`scalar deleting destructor'
 
@@ -118,8 +136,6 @@ class LegoCarBuildAnimPresenter : public LegoAnimPresenter {
 
 	// name verified by BETA10 0x10070d63
 	LegoChar* m_mainSourceId; // 0x14c
-
-	friend class LegoCarBuild;
 };
 
 #endif // LEGOCARBUILDPRESENTER_H
diff --git a/LEGO1/lego/legoomni/include/legoinputmanager.h b/LEGO1/lego/legoomni/include/legoinputmanager.h
index 859d1a64..8f2b0693 100644
--- a/LEGO1/lego/legoomni/include/legoinputmanager.h
+++ b/LEGO1/lego/legoomni/include/legoinputmanager.h
@@ -121,7 +121,9 @@ class LegoInputManager : public MxPresenter {
 	// FUNCTION: BETA10 0x10031ba0
 	LegoControlManager* GetControlManager() { return m_controlManager; }
 
+	// FUNCTION: BETA10 0x10017870
 	LegoWorld* GetWorld() { return m_world; }
+
 	LegoCameraController* GetCamera() { return m_camera; }
 
 	void ProcessEvents();
diff --git a/LEGO1/lego/legoomni/include/mxtransitionmanager.h b/LEGO1/lego/legoomni/include/mxtransitionmanager.h
index 0af65db5..178b114a 100644
--- a/LEGO1/lego/legoomni/include/mxtransitionmanager.h
+++ b/LEGO1/lego/legoomni/include/mxtransitionmanager.h
@@ -34,7 +34,7 @@ class MxTransitionManager : public MxCore {
 	virtual MxResult GetDDrawSurfaceFromVideoManager(); // vtable+0x14
 
 	enum TransitionType {
-		e_notTransitioning = 0,
+		e_idle = 0, // name verified by BETA10 0x100ec4e6
 		e_noAnimation,
 		e_dissolve,
 		e_mosaic,
@@ -45,7 +45,7 @@ class MxTransitionManager : public MxCore {
 
 	MxResult StartTransition(TransitionType p_animationType, MxS32 p_speed, MxBool p_doCopy, MxBool p_playMusicInAnim);
 
-	TransitionType GetTransitionType() { return m_transitionType; }
+	TransitionType GetTransitionType() { return m_mode; }
 
 	// SYNTHETIC: LEGO1 0x1004b9e0
 	// MxTransitionManager::`scalar deleting destructor'
@@ -68,13 +68,16 @@ class MxTransitionManager : public MxCore {
 	FlagBitfield m_copyFlags;          // 0x20
 	undefined4 m_unk0x24;              // 0x24
 	FlagBitfield m_unk0x28;            // 0x28
-	TransitionType m_transitionType;   // 0x2c
-	LPDIRECTDRAWSURFACE m_ddSurface;   // 0x30
-	MxU16 m_animationTimer;            // 0x34
-	MxU16 m_columnOrder[640];          // 0x36
-	MxU16 m_randomShift[480];          // 0x536
-	MxULong m_systemTime;              // 0x8f8
-	MxS32 m_animationSpeed;            // 0x8fc
+
+	// name verified by BETA10 0x100ec4e6
+	TransitionType m_mode; // 0x2c
+
+	LPDIRECTDRAWSURFACE m_ddSurface; // 0x30
+	MxU16 m_animationTimer;          // 0x34
+	MxU16 m_columnOrder[640];        // 0x36
+	MxU16 m_randomShift[480];        // 0x536
+	MxULong m_systemTime;            // 0x8f8
+	MxS32 m_animationSpeed;          // 0x8fc
 };
 
 #endif // MXTRANSITIONMANAGER_H
diff --git a/LEGO1/lego/legoomni/src/build/legocarbuild.cpp b/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
index 48e6bb03..0a9f923c 100644
--- a/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
+++ b/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
@@ -1,5 +1,6 @@
 #include "legocarbuild.h"
 
+#include "copter_actions.h"
 #include "dunebuggy.h"
 #include "helicopter.h"
 #include "jetski.h"
@@ -26,6 +27,12 @@
 #include <isle.h>
 #include <vec.h>
 
+// names and values verified by BETA10 0x1006d742
+#define Helicopter_Actor 1
+#define DuneBugy_Actor 2
+#define Jetski_Actor 3
+#define RaceCar_Actor 4
+
 DECOMP_SIZE_ASSERT(LegoCarBuild, 0x34c)
 DECOMP_SIZE_ASSERT(LegoVehicleBuildState, 0x50)
 
@@ -87,12 +94,27 @@ MxBool LegoCarBuild::VTable0x5c()
 	return TRUE;
 }
 
-// STUB: LEGO1 0x10022a80
-// STUB: BETA10 0x1006aea3
+// FUNCTION: LEGO1 0x10022a80
+// FUNCTION: BETA10 0x1006aea3
 LegoCarBuild::~LegoCarBuild()
 {
-	// TODO
-	// ...
+	m_unk0x100 = 0;
+	m_unk0x110 = NULL;
+
+	if (m_unk0x258) {
+		m_unk0x258->SetUnknown0xbc(0);
+		m_unk0x258->SetTickleState(MxPresenter::e_idle);
+		m_unk0x258 = NULL;
+	}
+
+	ControlManager()->Unregister(this);
+	TickleManager()->UnregisterClient(this);
+
+	if (InputManager()->GetWorld() == this) {
+		InputManager()->ClearWorld();
+	}
+
+	InputManager()->UnRegister(this);
 	NotificationManager()->Unregister(this);
 }
 
@@ -117,22 +139,22 @@ MxResult LegoCarBuild::Create(MxDSAction& p_dsAction)
 		if (m_atomId == *g_copterScript) {
 			buildStateClassName = "LegoCopterBuildState";
 			GameState()->SetCurrentArea(LegoGameState::e_copterbuild);
-			m_unk0x330 = 1;
+			m_carId = Helicopter_Actor;
 		}
 		else if (m_atomId == *g_dunecarScript) {
 			buildStateClassName = "LegoDuneCarBuildState";
 			GameState()->SetCurrentArea(LegoGameState::e_dunecarbuild);
-			m_unk0x330 = 2;
+			m_carId = DuneBugy_Actor;
 		}
 		else if (m_atomId == *g_jetskiScript) {
 			buildStateClassName = "LegoJetskiBuildState";
 			GameState()->SetCurrentArea(LegoGameState::e_jetskibuild);
-			m_unk0x330 = 3;
+			m_carId = Jetski_Actor;
 		}
 		else if (m_atomId == *g_racecarScript) {
 			buildStateClassName = "LegoRaceCarBuildState";
 			GameState()->SetCurrentArea(LegoGameState::e_racecarbuild);
-			m_unk0x330 = 4;
+			m_carId = Helicopter_Actor;
 		}
 
 		LegoGameState* gameState = GameState();
@@ -429,7 +451,7 @@ MxResult LegoCarBuild::Tickle()
 		DWORD time = timeGetTime();
 		DWORD dTime = (time - m_unk0x10c) / 100;
 
-		if (m_unk0x330 == 4) {
+		if (m_carId == Helicopter_Actor) {
 			switch (m_unk0x10a) {
 			// TODO: Work out constants
 			case 500:
@@ -452,7 +474,7 @@ MxResult LegoCarBuild::Tickle()
 				return SUCCESS;
 			}
 		}
-		else if (m_unk0x330 == 3) {
+		else if (m_carId == Jetski_Actor) {
 			switch (m_unk0x10a) {
 			case 500:
 				LEGOCARBUILD_TICKLE_CASE(291, 291, 311, "Exit_Ctl")
@@ -473,7 +495,7 @@ MxResult LegoCarBuild::Tickle()
 				// 	return SUCCESS;
 			}
 		}
-		else if (m_unk0x330 == 2) {
+		else if (m_carId == DuneBugy_Actor) {
 			switch (m_unk0x10a) {
 			case 500:
 				LEGOCARBUILD_TICKLE_CASE(155, 155, 175, "Exit_Ctl")
@@ -490,7 +512,7 @@ MxResult LegoCarBuild::Tickle()
 				return SUCCESS;
 			}
 		}
-		else if (m_unk0x330 == 1) {
+		else if (m_carId == Helicopter_Actor) {
 			switch (m_unk0x10a) {
 			case 500:
 				LEGOCARBUILD_TICKLE_CASE(185, 185, 205, "Exit_Ctl")
@@ -575,7 +597,7 @@ MxLong LegoCarBuild::Notify(MxParam& p_param)
 
 			break;
 		case c_notificationControl:
-			result = FUN_10024890((LegoEventNotificationParam*) &p_param);
+			result = FUN_10024890(&p_param);
 
 			if (result == 1) {
 				m_unk0x109 = 0;
@@ -624,7 +646,7 @@ void LegoCarBuild::ReadyWorld()
 	InitPresenters();
 
 	if (BackgroundAudioManager()->GetEnabled()) {
-		InvokeAction(Extra::ActionType::e_start, *g_jukeboxScript, FUN_10025ee0(m_unk0x330), NULL);
+		InvokeAction(Extra::ActionType::e_start, *g_jukeboxScript, FUN_10025ee0(m_carId), NULL);
 		m_buildState->m_animationState = LegoVehicleBuildState::e_unknown2;
 		NotificationManager()->Send(this, MxNotificationParam());
 	}
@@ -636,8 +658,8 @@ void LegoCarBuild::ReadyWorld()
 // FUNCTION: LEGO1 0x100243a0
 void LegoCarBuild::FUN_100243a0()
 {
-	switch (m_unk0x330) {
-	case 1:
+	switch (m_carId) {
+	case Helicopter_Actor:
 		if (GameState()->GetCurrentAct() == LegoGameState::Act::e_act2) {
 			m_destLocation = LegoGameState::Area::e_act3script;
 			TransitionManager()->StartTransition(MxTransitionManager::TransitionType::e_mosaic, 50, FALSE, FALSE);
@@ -648,15 +670,15 @@ void LegoCarBuild::FUN_100243a0()
 			TransitionManager()->StartTransition(MxTransitionManager::TransitionType::e_mosaic, 50, FALSE, FALSE);
 			break;
 		}
-	case 2:
+	case DuneBugy_Actor:
 		m_destLocation = LegoGameState::Area::e_garadoor;
 		TransitionManager()->StartTransition(MxTransitionManager::TransitionType::e_mosaic, 50, FALSE, FALSE);
 		break;
-	case 3:
+	case Jetski_Actor:
 		m_destLocation = LegoGameState::Area::e_unk17;
 		TransitionManager()->StartTransition(MxTransitionManager::TransitionType::e_mosaic, 50, FALSE, FALSE);
 		break;
-	case 4:
+	case RaceCar_Actor:
 		m_destLocation = LegoGameState::Area::e_unk20;
 		TransitionManager()->StartTransition(MxTransitionManager::TransitionType::e_mosaic, 50, FALSE, FALSE);
 	}
@@ -788,7 +810,7 @@ undefined4 LegoCarBuild::FUN_10024c20(LegoEventNotificationParam* p_param)
 
 	switch (m_buildState->m_animationState) {
 	case 4:
-		entity = (LegoEntity*) Find(m_atomId, m_unk0x330);
+		entity = (LegoEntity*) Find(m_atomId, m_carId);
 
 		if (entity && entity->GetROI()) {
 
@@ -837,7 +859,7 @@ undefined4 LegoCarBuild::FUN_10024c20(LegoEventNotificationParam* p_param)
 			assert(destWorld);
 			m_buildState->m_animationState = LegoVehicleBuildState::e_exiting;
 
-			if (m_unk0x258->m_numberOfParts != m_unk0x258->m_placedPartCount) {
+			if (m_unk0x258->AllPartsPlaced()) {
 				FUN_100243a0();
 			}
 			else {
@@ -852,17 +874,17 @@ undefined4 LegoCarBuild::FUN_10024c20(LegoEventNotificationParam* p_param)
 	case 2:
 		MxU32 jukeboxScript;
 
-		switch (m_unk0x330) {
-		case 1:
+		switch (m_carId) {
+		case Helicopter_Actor:
 			jukeboxScript = JukeboxScript::c_HelicopterBuild_Music;
 			break;
-		case 2:
+		case DuneBugy_Actor:
 			jukeboxScript = JukeboxScript::c_DuneCarBuild_Music;
 			break;
-		case 3:
+		case Jetski_Actor:
 			jukeboxScript = JukeboxScript::c_JetskiBuild_Music;
 			break;
-		case 4:
+		case RaceCar_Actor:
 			jukeboxScript = JukeboxScript::c_RaceCarBuild_Music;
 		}
 
@@ -893,6 +915,14 @@ void LegoCarBuild::FUN_10024ef0()
 	FUN_10015820(FALSE, 7);
 }
 
+// FUNCTION: LEGO1 0x10024f30
+// FUNCTION: BETA10 0x1006dfa0
+void LegoCarBuild::FUN_10024f30()
+{
+	FUN_10022f30();
+	m_unk0x258->SetUnknown0xbc(2);
+}
+
 // FUNCTION: LEGO1 0x10024f50
 // FUNCTION: BETA10 0x1006dfce
 void LegoCarBuild::FUN_10024f50()
@@ -973,13 +1003,64 @@ void LegoCarBuild::FUN_100250e0(MxBool p_enabled)
 	}
 }
 
-// STUB: LEGO1 0x10025450
-// STUB: BETA10 0x1006e599
-void LegoCarBuild::FUN_10025450()
+// STUB: LEGO1 0x10025350
+// STUB: BETA10 0x1006e3c0
+void LegoCarBuild::FUN_10025350(MxS32 p_param)
 {
 	// TODO
 }
 
+// FUNCTION: LEGO1 0x10025450
+// FUNCTION: BETA10 0x1006e599
+void LegoCarBuild::FUN_10025450()
+{
+	m_unk0x12c = m_unk0x110->GetLocal2World();
+	m_unk0x1c0 = m_unk0x12c;
+
+	Vector3 local_c(m_unk0x1c0[3]);
+	local_c = Vector3(m_unk0x258->GetUnknown0xe0()[3]);
+
+	// This looks odd, but it improves the LEGO1 match while breaking the BETA10 match.
+	// I don't know whether this is due to compiler entropy.
+	// Feel free to replace unk0x178 -> m_unk0x178 and remove this variable if it improves the LEGO1 match
+	// in the future.
+	MxMatrix* unk0x178 = &m_unk0x178;
+	*unk0x178 = m_unk0x12c;
+
+	if (m_unk0x258->PartIsPlaced(m_unk0x110->GetName())) {
+		m_unk0x2a4 = Vector4(m_unk0x110->GetWorldPosition());
+
+		if (!m_unk0x2d4) {
+			m_unk0x2bc = m_unk0x2a4;
+
+			m_unk0x208 = m_unk0x12c;
+			m_unk0x2a4[0] += m_unk0x1c0[3][0] - m_unk0x208[3][0];
+			m_unk0x2a4[1] += m_unk0x1c0[3][1] - m_unk0x208[3][1];
+			m_unk0x2a4[2] += m_unk0x1c0[3][2] - m_unk0x208[3][2];
+		}
+
+		*unk0x178 = m_unk0x1c0;
+	}
+	else {
+		const LegoChar* wiredName;
+
+		if (!m_unk0x258->FUN_10079c30(m_unk0x110->GetName())) {
+			wiredName = m_unk0x258->GetWiredNameByPartName(m_unk0x110->GetName());
+		}
+		else {
+			wiredName = m_unk0x258->GetWiredNameOfLastPlacedPart();
+		}
+
+		LegoROI* parentROI = (LegoROI*) m_unk0x110->GetParentROI();
+		m_unk0x208 = parentROI->FindChildROI(wiredName, parentROI)->GetLocal2World();
+		m_unk0x2bc = Vector4(parentROI->FindChildROI(wiredName, parentROI)->GetWorldPosition());
+		m_unk0x2a4 = Vector4(m_unk0x110->GetWorldPosition());
+
+		m_unk0x2a4[2] += (m_unk0x1c0[3][2] - m_unk0x12c[3][2]);
+		m_unk0x178[3][2] = m_unk0x1c0[3][2];
+	}
+}
+
 // FUNCTION: LEGO1 0x100256c0
 // FUNCTION: BETA10 0x1006e96c
 void LegoCarBuild::Enable(MxBool p_enable)
@@ -999,6 +1080,7 @@ void LegoCarBuild::Enable(MxBool p_enable)
 }
 
 // STUB: LEGO1 0x10025720
+// STUB: BETA10 0x1006e9df
 undefined4 LegoCarBuild::FUN_10025720(undefined4 p_param1)
 {
 	// TODO
@@ -1057,7 +1139,7 @@ void LegoCarBuild::FUN_10025e40()
 MxBool LegoCarBuild::Escape()
 {
 	BackgroundAudioManager()->Init();
-	MxS32 targetEntityId = FUN_10025ee0(m_unk0x330);
+	MxS32 targetEntityId = FUN_10025ee0(m_carId);
 	InvokeAction(Extra::ActionType::e_stop, *g_jukeboxScript, targetEntityId, NULL);
 	DeleteObjects(&m_atomId, 500, 999);
 
diff --git a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
index 28cfbc53..13fb0adb 100644
--- a/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/build/legocarbuildpresenter.cpp
@@ -627,6 +627,20 @@ MxBool LegoCarBuildAnimPresenter::StringEndsOnZero(const LegoChar* p_string)
 	return (p_string[strlen(p_string) - 2] != '0');
 }
 
+// FUNCTION: LEGO1 0x10079d60
+// FUNCTION: BETA10 0x1007284c
+const LegoChar* LegoCarBuildAnimPresenter::GetWiredNameByPartName(const LegoChar* p_name)
+{
+	for (MxS16 i = 0; i < m_numberOfParts; i++) {
+		if (strcmpi(p_name, m_parts[i].m_name) == 0) {
+			return m_parts[i].m_wiredName;
+		}
+	}
+
+	return NULL;
+}
+
+
 // FUNCTION: LEGO1 0x10079e20
 // FUNCTION: BETA10 0x10072959
 const BoundingSphere& LegoCarBuildAnimPresenter::FUN_10079e20()
diff --git a/LEGO1/lego/legoomni/src/common/legoutils.cpp b/LEGO1/lego/legoomni/src/common/legoutils.cpp
index d90e655e..34248163 100644
--- a/LEGO1/lego/legoomni/src/common/legoutils.cpp
+++ b/LEGO1/lego/legoomni/src/common/legoutils.cpp
@@ -238,6 +238,7 @@ MxBool CheckIfEntityExists(MxBool p_enable, const char* p_filename, MxS32 p_enti
 void NotifyEntity(const char* p_filename, MxS32 p_entityId, LegoEntity* p_sender);
 
 // FUNCTION: LEGO1 0x1003e430
+// FUNCTION: BETA10 0x100d3fda
 void InvokeAction(Extra::ActionType p_actionId, const MxAtomId& p_pAtom, MxS32 p_targetEntityId, LegoEntity* p_sender)
 {
 	MxDSAction action;
diff --git a/LEGO1/lego/legoomni/src/common/misc.cpp b/LEGO1/lego/legoomni/src/common/misc.cpp
index f9c78e5d..2acc4be2 100644
--- a/LEGO1/lego/legoomni/src/common/misc.cpp
+++ b/LEGO1/lego/legoomni/src/common/misc.cpp
@@ -188,8 +188,10 @@ void SetCurrentWorld(LegoWorld* p_world)
 }
 
 // FUNCTION: LEGO1 0x10015900
+// FUNCTION: BETA10 0x100e4f02
 MxTransitionManager* TransitionManager()
 {
+	assert(LegoOmni::GetInstance());
 	return LegoOmni::GetInstance()->GetTransitionManager();
 }
 
diff --git a/LEGO1/lego/legoomni/src/common/mxtransitionmanager.cpp b/LEGO1/lego/legoomni/src/common/mxtransitionmanager.cpp
index bb252592..f7e446bc 100644
--- a/LEGO1/lego/legoomni/src/common/mxtransitionmanager.cpp
+++ b/LEGO1/lego/legoomni/src/common/mxtransitionmanager.cpp
@@ -21,7 +21,7 @@ RECT g_fullScreenRect = {0, 0, 640, 480};
 MxTransitionManager::MxTransitionManager()
 {
 	m_animationTimer = 0;
-	m_transitionType = e_notTransitioning;
+	m_mode = e_idle;
 	m_ddSurface = NULL;
 	m_waitIndicator = NULL;
 	m_copyBuffer = NULL;
@@ -60,7 +60,7 @@ MxResult MxTransitionManager::Tickle()
 
 	this->m_systemTime = timeGetTime();
 
-	switch (this->m_transitionType) {
+	switch (this->m_mode) {
 	case e_noAnimation:
 		NoTransition();
 		break;
@@ -84,6 +84,7 @@ MxResult MxTransitionManager::Tickle()
 }
 
 // FUNCTION: LEGO1 0x1004bb70
+// FUNCTION: BETA10 0x100ec4c1
 MxResult MxTransitionManager::StartTransition(
 	TransitionType p_animationType,
 	MxS32 p_speed,
@@ -91,13 +92,15 @@ MxResult MxTransitionManager::StartTransition(
 	MxBool p_playMusicInAnim
 )
 {
-	if (this->m_transitionType == e_notTransitioning) {
+	assert(m_mode == e_idle);
+
+	if (this->m_mode == e_idle) {
 		if (!p_playMusicInAnim) {
 			MxBackgroundAudioManager* backgroundAudioManager = BackgroundAudioManager();
 			backgroundAudioManager->Stop();
 		}
 
-		this->m_transitionType = p_animationType;
+		this->m_mode = p_animationType;
 
 		m_copyFlags.m_bit0 = p_doCopy;
 
@@ -133,8 +136,8 @@ MxResult MxTransitionManager::StartTransition(
 // FUNCTION: LEGO1 0x1004bc30
 void MxTransitionManager::EndTransition(MxBool p_notifyWorld)
 {
-	if (m_transitionType != e_notTransitioning) {
-		m_transitionType = e_notTransitioning;
+	if (m_mode != e_idle) {
+		m_mode = e_idle;
 
 		m_copyFlags.m_bit0 = FALSE;
 
diff --git a/LEGO1/lego/legoomni/src/control/legocontrolmanager.cpp b/LEGO1/lego/legoomni/src/control/legocontrolmanager.cpp
index b8125c50..f54fb548 100644
--- a/LEGO1/lego/legoomni/src/control/legocontrolmanager.cpp
+++ b/LEGO1/lego/legoomni/src/control/legocontrolmanager.cpp
@@ -45,6 +45,7 @@ void LegoControlManager::Register(MxCore* p_listener)
 }
 
 // FUNCTION: LEGO1 0x10028ea0
+// FUNCTION: BETA10 0x1007c330
 void LegoControlManager::Unregister(MxCore* p_listener)
 {
 	LegoNotifyListCursor cursor(&m_notifyList);
diff --git a/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp b/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
index 5383d39c..f546b2bf 100644
--- a/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
+++ b/LEGO1/lego/legoomni/src/input/legoinputmanager.cpp
@@ -339,6 +339,7 @@ void LegoInputManager::SetWorld(LegoWorld* p_world)
 }
 
 // FUNCTION: LEGO1 0x1005c730
+// FUNCTION: BETA10 0x100896dc
 void LegoInputManager::ClearWorld()
 {
 	m_world = NULL;
diff --git a/LEGO1/lego/legoomni/src/video/legovideomanager.cpp b/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
index 9a41de96..5d9fbf1d 100644
--- a/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
+++ b/LEGO1/lego/legoomni/src/video/legovideomanager.cpp
@@ -285,7 +285,7 @@ void LegoVideoManager::ToggleFPS(MxBool p_visible)
 MxResult LegoVideoManager::Tickle()
 {
 	if (m_unk0x554 && !m_videoParam.Flags().GetFlipSurfaces() &&
-		TransitionManager()->GetTransitionType() == MxTransitionManager::e_notTransitioning) {
+		TransitionManager()->GetTransitionType() == MxTransitionManager::e_idle) {
 		Sleep(30);
 	}
 
diff --git a/LEGO1/library_msvc.h b/LEGO1/library_msvc.h
index 49e2efbd..d4770e46 100644
--- a/LEGO1/library_msvc.h
+++ b/LEGO1/library_msvc.h
@@ -19,6 +19,7 @@
 // _free
 
 // LIBRARY: LEGO1 0x1008b020
+// LIBRARY: BETA10 0x100f8d20
 // ___CxxFrameHandler
 
 // LIBRARY: LEGO1 0x1008b24c
diff --git a/LEGO1/mxgeometry/mxgeometry3d.h b/LEGO1/mxgeometry/mxgeometry3d.h
index 58d36198..b2f4d53a 100644
--- a/LEGO1/mxgeometry/mxgeometry3d.h
+++ b/LEGO1/mxgeometry/mxgeometry3d.h
@@ -78,6 +78,7 @@ class Mx4DPointFloat : public Vector4 {
 	const float& operator[](int idx) const { return m_data[idx]; }
 
 	// SYNTHETIC: LEGO1 0x10064b20
+	// SYNTHETIC: BETA10 0x10070420
 	// Mx4DPointFloat::operator=
 
 private:
diff --git a/LEGO1/mxgeometry/mxmatrix.h b/LEGO1/mxgeometry/mxmatrix.h
index 5ac9b2be..a9249225 100644
--- a/LEGO1/mxgeometry/mxmatrix.h
+++ b/LEGO1/mxgeometry/mxmatrix.h
@@ -20,6 +20,7 @@ class MxMatrix : public Matrix4 {
 	// FUNCTION: BETA10 0x10010860
 	float* operator[](int idx) { return m_data[idx]; }
 
+	// FUNCTION: BETA10 0x1001c670
 	const float* operator[](int idx) const { return m_data[idx]; }
 
 	// FUNCTION: LEGO1 0x10002850
diff --git a/LEGO1/omni/src/notify/mxnotificationmanager.cpp b/LEGO1/omni/src/notify/mxnotificationmanager.cpp
index dec49818..61e051f7 100644
--- a/LEGO1/omni/src/notify/mxnotificationmanager.cpp
+++ b/LEGO1/omni/src/notify/mxnotificationmanager.cpp
@@ -178,6 +178,7 @@ void MxNotificationManager::Register(MxCore* p_listener)
 }
 
 // FUNCTION: LEGO1 0x100acdf0
+// FUNCTION: BETA10 0x10126785
 void MxNotificationManager::Unregister(MxCore* p_listener)
 {
 	AUTOLOCK(m_lock);
diff --git a/LEGO1/realtime/orientableroi.h b/LEGO1/realtime/orientableroi.h
index 5e70aa5e..8daf1f51 100644
--- a/LEGO1/realtime/orientableroi.h
+++ b/LEGO1/realtime/orientableroi.h
@@ -51,6 +51,7 @@ class OrientableROI : public ROI {
 	// FUNCTION: BETA10 0x1004aa70
 	const float* GetWorldUp() const { return m_local2world[1]; }
 
+	// FUNCTION: BETA10 0x10070380
 	OrientableROI* GetParentROI() const { return m_parentROI; }
 
 	void SetParentROI(OrientableROI* p_parentROI) { m_parentROI = p_parentROI; }
diff --git a/LEGO1/realtime/vector.h b/LEGO1/realtime/vector.h
index a09e62c4..8f871474 100644
--- a/LEGO1/realtime/vector.h
+++ b/LEGO1/realtime/vector.h
@@ -152,6 +152,7 @@ class Vector2 {
 	virtual void SetVector(const Vector2* p_other) { EqualsImpl(p_other->m_data); } // vtable+0x6c
 
 	// SYNTHETIC: LEGO1 0x10010be0
+	// SYNTHETIC: BETA10 0x100121e0
 	// Vector3::operator=
 
 	// SYNTHETIC: BETA10 0x1004af40
@@ -301,10 +302,14 @@ class Vector4 : public Vector3 {
 	// FUNCTION: BETA10 0x10048780
 	Vector4(float* p_data) : Vector3(p_data) {}
 
-	// Hack: Some code initializes a Vector4 from a (most likely) const float* source.
-	// Example: LegoCarBuild::VTable0x6c
+	// Some code initializes a Vector4 from a `const float*` source.
+	// Example: `LegoCarBuild::VTable0x6c`
 	// Vector4 however is a class that can mutate its underlying source, making
 	// initialization with a const source fundamentally incompatible.
+	// BETA10 appears to have two separate constructors for Vector4 as well,
+	// supporting the theory that this decompilation is correct.
+
+	// FUNCTION: BETA10 0x100701b0
 	Vector4(const float* p_data) : Vector3((float*) p_data) {}
 
 	// Note: virtual function overloads appear in the virtual table