Weird vertex distortion... please help

I’m out of energy I’ve been dealing with problems on this mesh for a week…

does anybody know why the tips of this mesh’s teeth are for some reason locked at the origin?

Do you see what I mean? They aren’t like that in Maya. I tried to just delete them in maya and reimport the mesh, but then it fails to import… any ideas? please help. :(:confused:

thank you.

Look into weight normalization - depending on the normalization setting you choose when binding the mesh, you can sometimes run into this issue in maya itself. There should be a command under the Edit Smooth Skin menu to do a one-time normalization - make sure you’re testing the full range of motion on the joints in maya as well. Failing that, make sure you’re exporting with FBX version 2014.