After cutting the bolt, I stuck it in a drill and rounded it off on the bench grinder. Then I cut the excess off the head. I then drilled it out to fit the brass contact that was in the original button. I put two pieces of shrink wrap around the bolt shank/new button because it was a little skinnier than the original button. Then I epoxied it in place using JB Weld. I hope this helps someone out there.