What is the best way to remove this solid pin without harming the bluing on the frame, and the pin? I have several roll pin punches and a .040 cup pin. The roll pin doesn't seem like the right tool for the job and the cup pin seems too small. I have some nylon front sight punches that I am thinking about filing down to a diameter that might work against the round head on this pin and probably won't affect the bluing on either the slide or the pin (if the operator messes up). Once I get the pin started and recessed into slide, I can then use the cup pin. Other that that, I am not sure how best to proceed.