DG ALLIN· Registered
If you have a Matco tool truck in your area you can get this stuff called grab-it. It is like an oil that has tiny flakes of metal in it. You put a few drops on the head of the stripped screw and it helps the screwdriver grip the screw. It says it increases grip up to 800% on the bottle. Well I don't know about 800% but I had some luck with it on screws that weren't totally stripped out.