Antares Unit Mod - artillery pieces broken to varying degrees

I've been having some trouble with Antares. The t3 and t4 artillery offered by the mod refuses to fire, though some pieces are willing to at least swivel towards their target - traversing the gun and actually firing, though, doesn't work. I've got basic experience in LUA and the SupCom blueprints but I can't seem to find any good reason why the units are broken. The other units offered by Antares seem to work flawlessly, though.

Cheers, m608