Last post was in wrong category sorry. I have a 170 merc cruiser and the waterpump seal is leaking water into the timing cover. I have it apart and the seal is bad but the sealing surface of the front camshaft drive is in bad shape. My question is, is the stub shaft replaceable and if not is a speedy sleeve available so a good surface is made or does the camshaft have to be replaced. Thanks for any help, I am in the Baja the fish are there and I am not.<br /><br /> John