I am thinking of doing a few cosmetic mods to the tank.

I know the commanders hatch is the wrong and needs to be rotated - which should be easy enough.
Main gun needs to be rotated - how easy is this to do?
Main gun should be lengthened - I assume best to get a ready lengthened one or extension insert.
What else should I be looking at putting right on the tank.

I know I will regret saying this but everything is still working fine, the only thing that has happened a couple of times is a drive wheel coming loose. Is the bad reputation for Heng Long tanks really deserved?