I'm in the process of rebuilding my 85' R80 and might have a bit of a problem after pulling the oil pump. There was quite a bit of scoring on the oil pump, which I will replace, but it also resulted in some scoring on the crankcase in the pump recess. It would be great if I could just ignore the scoring but I'm not naive enough to think that I can get away with that. Can anyone weigh in on how bad the scoring actually is? From my understanding, the two options for fixing this would be to get a new case or get a sleeve insert? What would the cost of the sleeve be? I would feel terrible about replacing a case because of wear on such a small area.