Wilbur, this is not just an easy fix up, no drill to go near it. I'm not 100% sure what you are planning but if you plan on opening the hole and getting an oversize pin made, this is all work to be done by a very experienced machinist. The case would need milling out and an O/S pin made to suit. Finding somebody who can do this work is not easy. Then the cost quickly starts to add up and at the end of all this you still have an old engine
