I have about 7 or 8 235 Chevy distributors that I want to rebuild. I just purchased a working 60s/70s Sun 404 distributor machine to get the job done accurately. In order to get the advance mechanism and the lower part of the 235 distributor cleaned up, the shaft will need to be removed. Would anyone have any experience in removing and replacing the distributor gear pin on a 235 distributor? The originals are solid and were machine press peened on.