This Model used to load up fine as a 3ds up until a few days ago and now you can see that the car frame is rotated and pushed to the side. Imported as an .Obj it seems to load without this problem, but now it is sensitive to normals so a couple of pieces are inside out. Again, this used to load up ok without problems with normals and the Sketchfab uploader seemed a lot more robust and forgiving then it is now. Has anything changed? Any ideas how to correct the car frame (I have already re-centred the pivot of the frame in Max).