I hope this makes sense. I bought some used Rio pickups and went to install them tonight and it appears that the screw holes for the adjustment screws and springs are not threaded meaning the standard Duncan and or Gibson screws drop right in the holes. Either these were stripped out or have no threads for direct mounting instead.
I vaguely recall someone posting a fix for this scenario, maybe using the right size nut glued to the base so the screw threads?
Thanks for any ideas?