I decided to tear my planter back apart and replace the scraper/ holder, the roll pin holes on the shank are worn out enough to put a 5/16 bolt threw. I was thinking about drilling out the new ones out to use a 5/16 roll pin ,what size drill bit would I use for a 5/16 roll pin is my question I guess and if this fix takes up all the slop is that a bad thing? I know that I could order a over size repair kit but that requires me to drill a13/32 hole in the shank and there would not be much steel left on the bottom of the new size hole and could possibly tear out I feel

thanks
smoke