diff --git a/src/core/FileLoader.cpp b/src/core/FileLoader.cpp
index cc2b402b..afa2a66f 100644
--- a/src/core/FileLoader.cpp
+++ b/src/core/FileLoader.cpp
@@ -1135,12 +1135,12 @@ CFileLoader::LoadMLO(const char *line)
 	char smth[8];
 	char name[24];
 	int modelIndex;
-	float someFloat;
+	float drawDist;
 
-	sscanf(line, "%s %s %d %f", smth, name, &modelIndex, &someFloat);
+	sscanf(line, "%s %s %d %f", smth, name, &modelIndex, &drawDist);
 	CMloModelInfo *minfo = CModelInfo::AddMloModel(modelIndex);
 	minfo->SetModelName(name);
-	minfo->field_34 = someFloat;
+	minfo->drawDist = drawDist;
 	int instId = CModelInfo::GetMloInstanceStore().allocPtr;
 	minfo->firstInstance = instId;
 	minfo->lastInstance = instId;
diff --git a/src/modelinfo/MloModelInfo.h b/src/modelinfo/MloModelInfo.h
index d4344706..b1ae3298 100644
--- a/src/modelinfo/MloModelInfo.h
+++ b/src/modelinfo/MloModelInfo.h
@@ -5,7 +5,7 @@
 class CMloModelInfo : public CClumpModelInfo
 {
 public:
-	float field_34; // draw distance?
+	float drawDist;
 	int firstInstance;
 	int lastInstance;
 public:
diff --git a/src/modelinfo/XtraCompsModelInfo.h b/src/modelinfo/XtraCompsModelInfo.h
index 9832399c..ab308a8a 100644
--- a/src/modelinfo/XtraCompsModelInfo.h
+++ b/src/modelinfo/XtraCompsModelInfo.h
@@ -7,6 +7,7 @@ class CXtraCompsModelInfo : public CClumpModelInfo
 	int field_34;
 public:
 	CXtraCompsModelInfo(void) : CClumpModelInfo(MITYPE_XTRACOMPS) { field_34 = 0; }
-	void SetClump(RpClump*) {};
 	void Shutdown(void) {};
+	RwObject *CreateInstance(void) { return nil; }
+	void SetClump(RpClump*) {};
 };
\ No newline at end of file
diff --git a/src/renderer/Renderer.cpp b/src/renderer/Renderer.cpp
index 1c0bd445..25effc81 100644
--- a/src/renderer/Renderer.cpp
+++ b/src/renderer/Renderer.cpp
@@ -154,11 +154,14 @@ CRenderer::PreRender(void)
 void
 CRenderer::RenderOneRoad(CEntity *e)
 {
+#ifndef MASTER
 	if(gbDontRenderBuildings)
 		return;
 	if(gbShowCollisionPolys)
 		CCollision::DrawColModel_Coloured(e->GetMatrix(), *CModelInfo::GetModelInfo(e->GetModelIndex())->GetColModel(), e->GetModelIndex());
-	else{
+	else
+#endif
+	{
 #ifdef EXTENDED_PIPELINES
 		CustomPipes::AttachGlossPipe(e->GetAtomic());
 #endif
diff --git a/src/rw/VisibilityPlugins.cpp b/src/rw/VisibilityPlugins.cpp
index 7ff5c243..e6d4641d 100644
--- a/src/rw/VisibilityPlugins.cpp
+++ b/src/rw/VisibilityPlugins.cpp
@@ -155,7 +155,7 @@ CVisibilityPlugins::Initialise(void)
 	m_alphaList.head.item.sort = 0.0f;
 	m_alphaList.tail.item.sort = 100000000.0f;
 #ifdef ASPECT_RATIO_SCALE
-	// default 150 if not enough for bigger FOVs
+	// default 150 is not enough for bigger FOVs
 	m_alphaEntityList.Init(NUMALPHAENTITYLIST * 3);
 #else
 	m_alphaEntityList.Init(NUMALPHAENTITYLIST);
@@ -658,8 +658,7 @@ CVisibilityPlugins::RenderTrainHiDetailAlphaCB(RpAtomic *atomic)
 				return atomic;
 
 		if(flags & ATOMIC_FLAG_DRAWLAST){
-			// sort before clump
-			if(!InsertAtomicIntoSortedList(atomic, distsq - 0.0001f))
+			if(!InsertAtomicIntoSortedList(atomic, distsq))
 				RENDERCALLBACK(atomic);
 		}else{
 			if(!InsertAtomicIntoSortedList(atomic, distsq + dot))
@@ -791,16 +790,6 @@ CVisibilityPlugins::DefaultVisibilityCB(RpClump *clump)
 	return true;
 }
 
-bool
-CVisibilityPlugins::MloVisibilityCB(RpClump *clump)
-{
-	RwFrame *frame = RpClumpGetFrame(clump);
-	CMloModelInfo *modelInfo = (CMloModelInfo*)GetFrameHierarchyId(frame);
-	if (sq(modelInfo->field_34) < GetDistanceSquaredFromCamera(frame))
-		return false;
-	return CVisibilityPlugins::FrustumSphereCB(clump);
-}
-
 bool
 CVisibilityPlugins::FrustumSphereCB(RpClump *clump)
 {
@@ -816,12 +805,23 @@ CVisibilityPlugins::FrustumSphereCB(RpClump *clump)
 	return RwCameraFrustumTestSphere(ms_pCamera, &sphere) != rwSPHEREOUTSIDE;
 }
 
+bool
+CVisibilityPlugins::MloVisibilityCB(RpClump *clump)
+{
+	RwFrame *frame = RpClumpGetFrame(clump);
+	CMloModelInfo *modelInfo = (CMloModelInfo*)GetFrameHierarchyId(frame);
+	if (SQR(modelInfo->drawDist) < GetDistanceSquaredFromCamera(frame))
+		return false;
+	return CVisibilityPlugins::FrustumSphereCB(clump);
+}
+
 bool
 CVisibilityPlugins::VehicleVisibilityCB(RpClump *clump)
 {
-	if (GetDistanceSquaredFromCamera(RpClumpGetFrame(clump)) <= ms_vehicleLod1Dist)
-		return FrustumSphereCB(clump);
-	return false;
+	RwFrame *frame = RpClumpGetFrame(clump);
+	if (ms_vehicleLod1Dist < GetDistanceSquaredFromCamera(frame))
+		return false;
+	return FrustumSphereCB(clump);
 }
 
 bool
@@ -927,6 +927,12 @@ CVisibilityPlugins::ClearAtomicFlag(RpAtomic *atomic, int f)
 	ATOMICEXT(atomic)->flags &= ~f;
 }
 
+void
+CVisibilityPlugins::SetAtomicId(RpAtomic *atomic, int id)
+{
+	ATOMICEXT(atomic)->flags = id;
+}
+
 int
 CVisibilityPlugins::GetAtomicId(RpAtomic *atomic)
 {
@@ -1012,7 +1018,9 @@ CVisibilityPlugins::SetClumpModelInfo(RpClump *clump, CClumpModelInfo *modelInfo
 
 	// Unused
 	switch (modelInfo->GetModelType()) {
-	// ignore MLO
+	case MITYPE_MLO:
+		CLUMPEXT(clump)->visibilityCB = MloVisibilityCB;
+		break;
 	case MITYPE_VEHICLE:
 		vmi = (CVehicleModelInfo*)modelInfo;
 		if(vmi->m_vehicleType == VEHICLE_TYPE_TRAIN ||
@@ -1026,6 +1034,12 @@ CVisibilityPlugins::SetClumpModelInfo(RpClump *clump, CClumpModelInfo *modelInfo
 	}
 }
 
+CClumpModelInfo*
+CVisibilityPlugins::GetClumpModelInfo(RpClump *clump)
+{
+	return (CClumpModelInfo*)GetFrameHierarchyId(RpClumpGetFrame(clump));
+}
+
 void
 CVisibilityPlugins::SetClumpAlpha(RpClump *clump, int alpha)
 {
@@ -1037,3 +1051,9 @@ CVisibilityPlugins::GetClumpAlpha(RpClump *clump)
 {
 	return CLUMPEXT(clump)->alpha;
 }
+
+bool
+CVisibilityPlugins::IsClumpVisible(RpClump *clump)
+{
+	return CLUMPEXT(clump)->visibilityCB(clump);
+}
diff --git a/src/rw/VisibilityPlugins.h b/src/rw/VisibilityPlugins.h
index 5fb87765..f97fd589 100644
--- a/src/rw/VisibilityPlugins.h
+++ b/src/rw/VisibilityPlugins.h
@@ -94,6 +94,7 @@ public:
 	static CSimpleModelInfo *GetAtomicModelInfo(RpAtomic *atomic);
 	static void SetAtomicFlag(RpAtomic*, int);
 	static void ClearAtomicFlag(RpAtomic*, int);
+	static void SetAtomicId(RpAtomic *atomic, int);
 	static int GetAtomicId(RpAtomic *atomic);
 	static void SetAtomicRenderCallback(RpAtomic*, RpAtomicCallBackRender);
 
@@ -123,8 +124,10 @@ public:
 		int alpha;
 	};
 	static void SetClumpModelInfo(RpClump*, CClumpModelInfo*);
+	static CClumpModelInfo *GetClumpModelInfo(RpClump*);
 	static void SetClumpAlpha(RpClump*, int);
 	static int GetClumpAlpha(RpClump*);
+	static bool IsClumpVisible(RpClump*);
 
 	static void *ClumpConstructor(void *object, int32 offset, int32 len);
 	static void *ClumpDestructor(void *object, int32 offset, int32 len);