I wouldn’t use sand paper, my buddy at the machine shop says even scotch brite pads will leave grit in the babbit. I sharpened the end of a 3 sided file and taped the rest. Make great bearing scrapers. Never have I put any astroglide on the bearing before driving it in though. My first assumption would be the cam going in tight, and while turning and looking for the shiny spots the bearing would rotate and the oil ports would no longer line up. I know it’s just paranoia, but I had never even considered it
