Oil pump drive shaft

In the Factory Service Manual it says to burnish a new bushing to the proper size with a burnishing tool (hone). Use a stiff wire brush that looks like a tube cleaner in a drill and check your fit to your oil pump drive often.
After you get it to fit you want to clean out your engine thoughly, your taking some metal out of the bushing and you want all of this stuff out of your motor, if this means tearing it down again then do it. Your motor needs to be clean or your going to kill it fast.