Ive got my 74 arctic cat (kawi 340) apart, case split and everything. ive ordered a winderosa professial rebuild gasket set. The problem is that the o-ring for one of the bearings seems to be shot, it is split at either end where the case seals. thing is that it almost looks like these things are made from two peices then joined once on the bearing. Does anyone have more info on this, or know if my gasket set will include o-rings?