diff --git a/LEGO1/lego/legoomni/src/common/legoplantmanager.cpp b/LEGO1/lego/legoomni/src/common/legoplantmanager.cpp
index 979860cf..7544b63e 100644
--- a/LEGO1/lego/legoomni/src/common/legoplantmanager.cpp
+++ b/LEGO1/lego/legoomni/src/common/legoplantmanager.cpp
@@ -140,7 +140,7 @@ MxResult LegoPlantManager::FUN_10026410()
 				for (MxS32 j = 0; j < boundary->GetNumEdges(); j++) {
 					Mx4DPointFloat* normal = boundary->GetEdgeNormal(j);
 
-					if (position.Dot(normal, &position) + (*normal)[3] < -0.001) {
+					if (position.Dot(normal, &position) + (*normal).index_operator(3) < -0.001) {
 						MxTrace(
 							"Plant %d shot location (%g, %g, %g) is not in boundary %s.\n",
 							i,
@@ -157,25 +157,28 @@ MxResult LegoPlantManager::FUN_10026410()
 				if (g_plantInfo[i].m_boundary != NULL) {
 					Mx4DPointFloat& unk0x14 = *g_plantInfo[i].m_boundary->GetUnknown0x14();
 
-					if (position.Dot(&position, &unk0x14) + unk0x14[3] <= 0.001 &&
-						position.Dot(&position, &unk0x14) + unk0x14[3] >= -0.001) {
-						continue;
+					if (position.Dot(&position, &unk0x14) + unk0x14.index_operator(3) > 0.001 ||
+						position.Dot(&position, &unk0x14) + unk0x14.index_operator(3) < -0.001) {
+
+						g_plantInfo[i].m_y =
+							-((position[0] * unk0x14.index_operator(0) + unk0x14.index_operator(3) +
+							   position[2] * unk0x14.index_operator(2)) /
+							  unk0x14.index_operator(1));
+
+						MxTrace(
+							"Plant %d shot location (%g, %g, %g) is not on plane of boundary %s...adjusting to (%g, "
+							"%g, "
+							"%g)\n",
+							i,
+							position[0],
+							position[1],
+							position[2],
+							g_plantInfo[i].m_boundary->GetName(),
+							position[0],
+							g_plantInfo[i].m_y,
+							position[2]
+						);
 					}
-
-					g_plantInfo[i].m_y =
-						-((unk0x14[3] + unk0x14[0] * position[0] + unk0x14[2] * position[2]) / unk0x14[1]);
-
-					MxTrace(
-						"Plant %d shot location (%g, %g, %g) is not on plane of boundary %s...adjusting to (%g, %g, %g)\n",
-						i,
-						position[0],
-						position[1],
-						position[2],
-						g_plantInfo[i].m_boundary->GetName(),
-						position[0],
-						g_plantInfo[i].m_y,
-						position[2]
-					);
 				}
 			}
 			else {
diff --git a/LEGO1/mxgeometry/mxgeometry3d.h b/LEGO1/mxgeometry/mxgeometry3d.h
index d7a87447..039d96af 100644
--- a/LEGO1/mxgeometry/mxgeometry3d.h
+++ b/LEGO1/mxgeometry/mxgeometry3d.h
@@ -78,6 +78,11 @@ class Mx4DPointFloat : public Vector4 {
 
 	const float& operator[](int idx) const { return m_data[idx]; }
 
+
+	// only used by a couple of BETA10 functions for some unknown reason
+	// FUNCTION: BETA10 0x1001c950
+	float& index_operator(int idx) { return m_data[idx]; }
+
 	// SYNTHETIC: LEGO1 0x10064b20
 	// SYNTHETIC: BETA10 0x10070420
 	// ??4Mx4DPointFloat@@QAEAAV0@ABV0@@Z