During the course of taking down doors, sanding, painting, and reinstalling them, a couple of the holes are too large for the screws. These are screws that hold a thumb lock mechanism for the bathroom door. It's only on the inside and the screws are very short so they won't interfere with the throw of the lock. Any ideas on how to fill the hole partially or completely so that it can then prove useful? I have never seen screws this short...but it's needed in this situation.