I had actually tried the fbx files (model and animations) in UDK and everything looked OK. When I imported them into UE4, however, most of the model looks OK during the animations, but the face is distorted, Kinda looks like an 80 year old Popeye without his dentures. I imported the same fbx file into Unity and, like UDK, everything looks fine. Does anyone have an idea as to what the problem might be?