XNA Glitches with my animation. Help please.

I’m working on a school project and we have to use XNA. I downloaded the microsoft skinning sample and their model renders fine. However, when rendering my own, the model warps and gets deformed and does weird things.

All of these are glitches :S

I’m not sure what I’m doing wrong at all. My blender model is:

and my blend file is: Swat.blend (1.95 MB)

The model I did not make. I downloaded it already rigged from mixamo. All I did was animate it. Any ideas?