diff --git a/LEGO1/mxdschunk.cpp b/LEGO1/mxdschunk.cpp
index 7ec8531c..63c43ba2 100644
--- a/LEGO1/mxdschunk.cpp
+++ b/LEGO1/mxdschunk.cpp
@@ -1,13 +1,19 @@
 #include "mxdschunk.h"
 
-// OFFSET: LEGO1 0x100be050 STUB
+// OFFSET: LEGO1 0x100be050
 MxDSChunk::MxDSChunk()
 {
-  // TODO
+  this->m_length = 0;
+  this->m_pStuff = NULL;
+  this->m_buffer = -1;
+  this->m_long1FromHeader = 0;
+  this->m_long2FromHeader = 0;
 }
 
-// OFFSET: LEGO1 0x100be170 STUB
+// OFFSET: LEGO1 0x100be170
 MxDSChunk::~MxDSChunk()
 {
-  // TODO
+  if ((this->m_length & 1) != 0) {
+    delete this->m_pStuff;
+  }
 }
diff --git a/LEGO1/mxdschunk.h b/LEGO1/mxdschunk.h
index 8758ffa3..f9b1d9d0 100644
--- a/LEGO1/mxdschunk.h
+++ b/LEGO1/mxdschunk.h
@@ -1,8 +1,11 @@
 #ifndef MXDSCHUNK_H
 #define MXDSCHUNK_H
 
-#include "mxcore.h"
 
+#include "mxcore.h"
+#include "mxtypes.h"
+
+// VTABLE 0x100dc7f8
 class MxDSChunk : public MxCore
 {
 public:
@@ -21,6 +24,13 @@ class MxDSChunk : public MxCore
   {
     return !strcmp(name, MxDSChunk::ClassName()) || MxCore::IsA(name);
   }
+private:
+  MxS16 m_length; // 0x8
+  MxLong m_buffer; // 0xc
+  MxLong m_long1FromHeader; // 0x10
+  MxLong m_long2FromHeader; // 0x14
+  void* m_pStuff; // 0x18
+  void* m_pSomething; // 0x1c
 };
 
 #endif // MXDSCHUNK_H