I just put my revo back together and i was wondering what the problem with it is, when i go to start it it wants to move, correct me if i am wrong but it seems to me like my clutch pack is bad because when i put it back together today it wasn't completly round is was kinda oblong shaped and a couple of the corners were broken off, if that is a problem what is a new clutch going to cost (approx) and if the clutch is not bad then what else could it be.