Theoretically you could put a sleeve on the screw and re cut the rack side interface to fit the new sleeve diameter. You may be able to use some type of epoxy or quick dry urethane on the rack side interface and then let the screw threads re-tap the freshly made surface. I have no idea how long this would last but some urethanes are very strong.

__________________
Toyota is a leader only because their drivers block everyone behind them. Oh what a feeling.