idk about the problem you have with the model but with this tool called wallmarket by NFIT you can do awesome things very easily.
you can indeed mix and match and they might be messed up but in this case it could be better than having him randomly transforming into a beast.
in fact thanks to wallmarket i made attacks like heartless angel, edited weapons so they could look different, and had different statistics, and even made it so that all my chars could equip the masamune
![grin :-D](https://forums.qhimm.com/Smileys/akyhne/grin.gif)
to put it simply it allows you to alter everything battle related for your characters. Meaning spells, weapons, armor, attacks, accesories, etc. so if you're interested u shud try it