Model deformed as FBX, working as OBJ, help?

Hello there,
so I’ve spent some time making a 3d model of a sword in 3ds max, but whenever I export it as FBX and then import it in Mudbox or Unreal Engine 4, the model is completely deformed. However if I export it as an OBJ and then import it in Mudbox, it works perfectly. Could anyone help me with this? I need it to work as FBX for UE4.

Here are some screenshots.

Model in 3ds max:

https://puu.sh/vKJ4d/c00564be36.png

Model in Mudbox as FBX:

https://puu.sh/vKJcl/720ae1ea1d.png

Thanks in advance for (hopefully) your help!

Did you try Reset XForm before exporting it to Mudbox? I guess your transform is just off.

Thanks, that worked.