Mesh dragging/glitching in CAS.

I am pretty new to creating/modifying meshes in blender, but today  I managed to create something I was really proud of. Only issue is that once I load CAS to see what it looks like in-game, the mesh seems to  be dragging/glitching to the side. At first I thought it might have been a misplaced vertex, but in blender it shows up fine. And it looks fine in S4S too... I don't know if it has to do with the skeleton or something, but someone please help me, I would really appreciate it.

Ill attach a link to the image below:

postimg.cc/fk6TyXjy

Thank you!