>>7943210Depends, its easy for most of them; just remove a couple of bricks (whose sole purpose is usually just to prop up smaller standard minifigs). There is also alot of spare pieces to fill in any loss of build integrity.
Cobi and by extension, Quan Guan are trickier. Cobi likes to build up with plates (more weight so tracks roll better) and they like weird snot techniques. Small Cobi turrets are the hardest to modify to the point where it is easier to just to MOC like I did with the Panzer 38, pic related.