I read the Faq on the Buckeye site about using a 1/4 bolt as a back up for the pin. They recommend drilling the hole with an undersized drill bit so the bolt can be a force fit. Can someone confirm that a D(0.246) is the correct bit for a 1/4 bolt? Are these Lettered bits a specialty item? Can you get them individually or do you have to by a complete set. Karl