oil pump drive seating/bushing 340

The bushing gets driven into the block, then should be burnished to clearance the inside diameter properly. There is a special tool for this. It doesnt get deburred per se. Does it turn freely when it's in as far as it can go? You could shorten the drive very slowly and carefully by grinding it. The hex end is heat treated, so you have to go very slowly and not let it get hot. but I've never seen or ehard of one being too tall... I'm more inclined to say you have a problem.