RE: Filling in screw holes
They sell the standard size accessory bushings at 3Rivers supply. But...!
Not all those holes drilled into the bows are for AMO standard mounts. There are lots of bows out there that were around before AMO was ever formed, and even more when sight brackets were slotted. The holes may not be the correct distance apart for them to work with today's accessories. Check the distance between the holes before drilling them out for the bushings.