Fix 3d max model for unity3d import (as .fbx)

Estimated duration: not set
Description: Im having some issues with the .FBX file type im trying to export an animated model from 3ds max into unity 3d but it becomes deformed and twisted (this also happens when reimporting the model back into 3dsmax) this link shows images of the model and settings used on import and export as well as error message seen on re import into 3ds max.

see attached screen shots of issue.