Heyy! I have a gas rampage xb,and it's been giving me some problems lately. About 2 weeks ago I bought the aluminum upgraded gear plate,center diff mount,and a set full set of bearings for it. I installed everything,and the rolls "rough" when i push it around on the floor. It's so bad that I can feel every tooth on the center diff as they are engaged. Also,the holes in the upper plastic plate that holds your throttle and steering servo don't all line u with the alum. upgrades. Please help