I'm hearing you Jeff, probably just better off cutting/splitting the boss off and put another boss on. The one I was looking at yesterday that prompted me to ask about the hydraulic puller is a Briggs on an alloy base so it has the eared type Victa boss and I don't have any spare ones of those and the seal is starting to leak. I'll just tell him to watch the oil, but this bloke has brought me a few mowers to look at and a couple had no oil in them and one motor was knocking so that one was dumped and another one he brought the other day has no oil and he said it was sometimes making a banging noise