Spring RTS Engine

Im in the middle of making a new concept mod thing, but i ran into some trouble. Namely, whenever i load a unit into a transport, it jitters around. As transports are an essential part of this mod, this kinda sucks. Any help sorting this out would be great.

I uploaded the mod here: http://www.fileuniverse.com/?p=showitem&ID=3641

Thanks

Yeah, ours do it too. I don't know if there's a way around it.