Thanks Cobrajr122, I found some broken pieces inside the TM gearbox, so I think the lipo fast firing rate might have caused it. Anyway, I'm in the stage of finding a replacement for my g36c gearbox. Do you think this will work:
http://www.airsoftpost.com/product_i...ducts_id=28112
G36 and G36c share the same gearbox, don't they?