importing assets get deformed,My objects deform after importing

when I import my assets from 3DSmax all my stuff gets deformed.
anyone who knows what causes this ???

link shows what i import and what i get after,when i Import a 3dsmax file, all the objects change inn all sorft of ways.
anyone here who knows what causes this to happen ???

Looks like the models in 3D Max are reference or instance copies rather than normal copies.