I'm thinking of laying out a ball that puts the pin in the ring finger. Using finger grips, do you position the pin right in the center of the hole/bit? I was going to position the pin to the right edge of the hole guessing of the pin pitch is 0, the ring finger being 3/8" right the bit would remove it all, the holes would not cross paths. Or maybe the pin hole is so small it won't matter and just center the bit.