Problem modding the guns!

[DanFraser]

So, I'm in the middle of creating my own uber boat. I know there's some out there already but I want it how I want it

I've edited the torps, which make a huge mess of anything they hit, might make them supersonic though, just for larfs. The subs go silly speeds, but not fast enough for my liking, so 100knts may be the order of the day there.

The guns though. Yep, they make holes as messy as torps, once they hit, the movement is too much and I can't adjust the gun direction finely enough. Then there's a little problem of if I try zooming in, boom, crash, gone. This seems to happen if I change anything to do with the guns themselves. As long as I don't zoom in everything is fine. What could cause this?