Custom model glitch

So I was trying to create a custom model, based on the vanilla Triarii model to which I added a different shield. Everything went fine until I started a custom battle and these weird glitches showed up:

https://i39.tinypic.com/ngwn4m.png

As far as I know, all vertices have been linked to their proper bones. When I imported the RTW animations into 3ds max, the model behaved perfectly fine (I've tried several animations).

Has anyone experienced this bug before?

Fixed. I started from scratch, and it appears to be working correctly now. I guess I must've missed some vertices after all.