after giving my rush evo some serious bashing and some cool doughnuts I took it apart to clean it up as I accidentally ran it into a pile of building sand (not doing that again!!!!). anyway I was flying over the speedbumps in the road and think I might have broke it. the rear drive wheels move in an unusual way I could spend hours explaining but it was easier to do a video. I thought it might be the gear box so I took that apart and took the big fat gear apart and I couldn't see any signs of broken plastic or stripped gears. so is this movement of the wheels in the video normal???

http://www.rcpics.net/img/48631