Hi guys, wondering if anyone can help me. I have a 1969 merc200 and the drive shaft(that's what i call it), where it runs through the water pump is heavy grooved from seal, it also has some pitting on it, but is below where the new seal would run. any solutions? i read someone talking about a speedy sleeve, would i try to get one the total length of the water pump or to stop at the impeller? thanks Jeff