diff --git a/src/Components/Modules/AssetInterfaces/IXModel.cpp b/src/Components/Modules/AssetInterfaces/IXModel.cpp
index 5b8a16ec..a89b05e8 100644
--- a/src/Components/Modules/AssetInterfaces/IXModel.cpp
+++ b/src/Components/Modules/AssetInterfaces/IXModel.cpp
@@ -1,6 +1,6 @@
 #include <STDInclude.hpp>
 
-#define IW4X_MODEL_VERSION 1
+#define IW4X_MODEL_VERSION 2
 
 namespace Assets
 {
@@ -91,12 +91,13 @@ namespace Assets
 				surface->deformed = reader.read<char>();
 
 				surface->streamHandle = reader.read<unsigned char>();
-				surface->flags = reader.read<unsigned short>();
-				surface->something = reader.read<short>();
-				surface->something2 = reader.read<int>();
+				surface->partBits[0] = reader.read<int>();
+				surface->partBits[1] = reader.read<int>();
+				surface->partBits[2] = reader.read<int>();
+				surface->partBits[3] = reader.read<int>();
 
-				surface->pad2 = reader.read<char>();
-				surface->pad3 = reader.read<int>();
+				surface->baseTriIndex = reader.read<unsigned __int16>();
+				surface->baseVertIndex = reader.read<unsigned __int16>();
 
 				surface->numVertices = reader.read<unsigned short>();
 				surface->numPrimitives = reader.read<unsigned short>();
diff --git a/src/Components/Modules/ModelSurfs.cpp b/src/Components/Modules/ModelSurfs.cpp
index 8a40d4b4..1167576b 100644
--- a/src/Components/Modules/ModelSurfs.cpp
+++ b/src/Components/Modules/ModelSurfs.cpp
@@ -132,7 +132,7 @@ namespace Components
 			std::memcpy(&tempSurfaces[i], source, 12);
 			std::memcpy(&tempSurfaces[i].indexBuffer, source + 16, 20);
 			std::memcpy(&tempSurfaces[i].numCT, source + 40, 8);
-			std::memcpy(&tempSurfaces[i].something, source + 52, 24);
+			std::memcpy(&tempSurfaces[i].partBits, source + 52, 24);
 			tempSurfaces[i].streamHandle = 0xFF; // Fake handle for buffer interception
 		}
 
@@ -164,7 +164,7 @@ namespace Components
  				surfs->numSurfaces = newSurfs->numSurfaces;
 
 				model->lods[i].surfs = newSurfs->surfaces;
-				std::memcpy(&model->lods[i].partBits, newSurfs->pad, 24);
+				std::memcpy(&model->lods[i].partBits, newSurfs->partBits, 24);
 
 				short numSurfs = static_cast<short>(newSurfs->numSurfaces);
 				model->lods[i].numSurfs = numSurfs;
diff --git a/src/Components/Modules/Zones.cpp b/src/Components/Modules/Zones.cpp
index 9bfc5254..34493123 100644
--- a/src/Components/Modules/Zones.cpp
+++ b/src/Components/Modules/Zones.cpp
@@ -167,7 +167,7 @@ namespace Components
 				std::memcpy(&tempSurfaces[i], source, 12);
 				std::memcpy(&tempSurfaces[i].indexBuffer, source + 16, 20);
 				std::memcpy(&tempSurfaces[i].numCT, source + 40, 8);
-				std::memcpy(&tempSurfaces[i].something, source + 52, 24);
+				std::memcpy(&tempSurfaces[i].partBits, source + 52, 24);
 
 				if (Zones::ZoneVersion >= 332)
 				{
diff --git a/src/Game/Structs.hpp b/src/Game/Structs.hpp
index 182878a5..ee93af09 100644
--- a/src/Game/Structs.hpp
+++ b/src/Game/Structs.hpp
@@ -1472,8 +1472,8 @@ namespace Game
 		unsigned short numVertices; // +2
 		unsigned short numPrimitives; // +4
 		unsigned char streamHandle; // something to do with buffers, +6
-		char pad2; // +7
-		int pad3; // +8
+		unsigned __int16 baseTriIndex;
+		unsigned __int16 baseVertIndex;
 		Face* indexBuffer; // +12
 		short blendNum1; // +16
 		short blendNum2; // +18
@@ -1483,10 +1483,8 @@ namespace Game
 		GfxPackedVertex* vertexBuffer; // +28
 		int numCT; // +32
 		XRigidVertList* ct; // +36
-		short something;
-		unsigned short flags;
-		int something2;
-		char pad5[16]; // +40
+		int partBits[4];
+		char pad5[8]; // +40
 					   // pad5 matches XModelSurfaces pad
 					   // total size, 64
 	};
@@ -1496,7 +1494,8 @@ namespace Game
 		const char* name;
 		XSurface* surfaces;
 		int numSurfaces;
-		char pad[24];
+		int partBits[4];
+		char pad[8];
 	};
 
 	struct XModelLodInfo