diff --git a/Extras/BulletMultiThreaded/SpuDoubleBuffer.h b/Extras/BulletMultiThreaded/SpuDoubleBuffer.h
index 027ad1b4b..c533a68a3 100644
--- a/Extras/BulletMultiThreaded/SpuDoubleBuffer.h
+++ b/Extras/BulletMultiThreaded/SpuDoubleBuffer.h
@@ -25,6 +25,8 @@ public:
 	bool	isPending() const { return m_dmaPending;}
 	DoubleBuffer();
 
+	void init ();
+
 	// dma get and put commands
 	void backBufferDmaGet(uint64_t ea, unsigned int numBytes, unsigned int tag);
 	void backBufferDmaPut(uint64_t ea, unsigned int numBytes, unsigned int tag);
@@ -41,9 +43,15 @@ public:
 template<class T, int size>
 DoubleBuffer<T,size>::DoubleBuffer()
 {
-	m_dmaPending = false;
-	m_frontBuffer = &m_buffer0[0];
-	m_backBuffer = &m_buffer1[0];
+	init ();
+}
+
+template<class T, int size>
+void DoubleBuffer<T,size>::init()
+{
+	this->m_dmaPending = false;
+	this->m_frontBuffer = &this->m_buffer0[0];
+	this->m_backBuffer = &this->m_buffer1[0];
 }
 
 template<class T, int size>
diff --git a/Extras/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.cpp b/Extras/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.cpp
index e21ec1c83..d5e2f3e9a 100644
--- a/Extras/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.cpp
+++ b/Extras/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.cpp
@@ -324,7 +324,7 @@ void	ProcessConvexConcaveSpuCollision(SpuCollisionPairInput* wuInput, CollisionT
 		{
 			float margin=convexShape->getMarginNV();
 			btVector3 halfExtents = convexShape->getImplicitShapeDimensions();
-			btTransform& t = wuInput->m_worldTransform0;
+			btTransform& t = convexInTriangleSpace;
 			btMatrix3x3 abs_b = t.getBasis().absolute();  
 			btPoint3 center = t.getOrigin();
 			btVector3 extent = btVector3(abs_b[0].dot(halfExtents),
@@ -343,7 +343,7 @@ void	ProcessConvexConcaveSpuCollision(SpuCollisionPairInput* wuInput, CollisionT
 			//add the radius to y-axis to get full height
 			btScalar radius = halfExtents[0];
 			halfExtents[1] += radius;
-			btTransform& t = wuInput->m_worldTransform0;
+			btTransform& t = convexInTriangleSpace;
 			btMatrix3x3 abs_b = t.getBasis().absolute();  
 			btPoint3 center = t.getOrigin();
 			btVector3 extent = btVector3(abs_b[0].dot(halfExtents),
@@ -360,7 +360,7 @@ void	ProcessConvexConcaveSpuCollision(SpuCollisionPairInput* wuInput, CollisionT
 		{
 			float radius = convexShape->getImplicitShapeDimensions().getX();// * convexShape->getLocalScaling().getX();
 			float margin = radius + convexShape->getMarginNV();
-			btTransform& t = wuInput->m_worldTransform0;
+			btTransform& t = convexInTriangleSpace;
 			const btVector3& center = t.getOrigin();
 			btVector3 extent(margin,margin,margin);
 			aabbMin = center - extent;
@@ -377,7 +377,7 @@ void	ProcessConvexConcaveSpuCollision(SpuCollisionPairInput* wuInput, CollisionT
 			cellDmaGet(&convexHullShape0, dmaPpuAddress2  , dmaSize, DMA_TAG(1), 0, 0);
 			cellDmaWaitTagStatusAll(DMA_MASK(1));
 			btConvexHullShape* localPtr = (btConvexHullShape*)&convexHullShape0;
-			btTransform& t = wuInput->m_worldTransform0;
+			btTransform& t = convexInTriangleSpace;
 
 			btScalar margin = convexShape->getMarginNV();
 
@@ -1042,6 +1042,8 @@ void	processCollisionTask(void* userPtr, void* lsMemPtr)
 	unsigned int numOnLastPage = taskDesc.numOnLastPage;
 
 	// prefetch first set of inputs and wait
+	lsMem.g_workUnitTaskBuffers.init();
+
 	unsigned int nextNumOnPage = (numPages > 1)? MIDPHASE_NUM_WORKUNITS_PER_PAGE : numOnLastPage;
 	lsMem.g_workUnitTaskBuffers.backBufferDmaGet(dmaInPtr, nextNumOnPage*sizeof(SpuGatherAndProcessWorkUnitInput), DMA_TAG(3));
 	dmaInPtr += MIDPHASE_WORKUNIT_PAGE_SIZE;