I've always used two part plumbers epoxy putty. The type that comes wrapped in a clear plastic tube. It looks like a big tootsie roll(white on the inside/green or blue on the outside). Cut a piece off and knead it together until it becomes gray in color. It's thermo-activated and gets hot as you mix it. Use a toothpick or stripped q-tip and work it down into the screw holes until they're full, then smooth off the top with your finger. Let it dry overnight. It gets hard as a rock and is screwable, sandable and paintable. Work fast, it sets up pretty quickly once it gets hot. Works good for me.

Leftybolt

Last edited by leftybolt; 05/21/07. Reason: typo