martinsr; it may be on down in the door forum post but someone listed or linked us to a guy who did a "purrfect" job on his door hinge pins. He defined the size to drill the middle part of the hinge and also the top and bottom hole of the hinge. I got an education on what an "R" drill bit is. It was the best info I had seen as far as exactly what size to use and on which holes. Perhaps it would help you if you stay original? Just trying to help...oh, I wrote that size and info down "somewhere" or I would list it here again. Mmmm, its in the shop...somewhere.