Im replacing teh rear brakes and bearing after a seal went out and water destroyed everything. There is a part called a collar. Its number 35 on the parts catalog diagram, available on Yamaha's website. It seems like it would space the rear braske drum away from the bearing, keep it from sliding in too far. Problem is - There wasn't one on it when I took it apart. Surely it didn't disinegrate like my bearing did, but I guess its possible. My questions is for anyone who has been inside one of these.. Is there a collar? How big is it? Is it something that is stuck to another part? Where did mine go?