Picked up a 01 auto the other day. I can tell the belt is slipping just from lack of power. Popped the cover and found that a new belt had been put on. The faces that move and drive the belt are glass smooth and have a pretty bad ridge in them towards the top. The clutches themselves dont have bushing play or slop in them. I am an auto mechanic, but this stuff is all new to me. What do i need to do?