Doing a timing belt job currently, and both the upper and lower timing covers are totally shot. Brittle, moutning tabs broken, etc. Looks like Dorman reproduces the covers and they can be bought for under $30 from RockAuto. The covers I removed have what looks like a rubber gasket along the edges where they would seal up against the block and head. Can't seem to find these gaskets online anywhere. Anyone know where to get them?