I'd like to edit this airship.

[ViralHatred]

I have no modeeling skill and I'm still noobish with alphas, but i'd like to edit this airship.

http://xgm.ru/files.php?fc=2

Near the bottom, I'd like to make the cannon non-TC, the rest non-TC and the gasbag area as TC'able.

So any help would be greatly appreciated