I'm sure it's common sense, but for some other newbie like me reading this, I'll elaborate.
I folded a paper towel several layers thick, and poked just the post I was working on through it, and sprayed just the post and screw. I tapped it very gently a few times with my tiny screwdriver as the directions said could be done, and two minutes later, was able to easily turn the screw out. The other was more nerve wracking, as the previous owners has completely mangled the screw end, so there was hardly a groove to fit the tip of the screwdriver into, so that wasn't working. As I had already finessed the key out since the screw was already backed out a little bit, just enough wiggle room to remove the key. I grabbed the pointed tip of the screw and easily turned it out that way, until there was more of the screw head sticking out and I could grab it with tiny needle nose pliers and twist it out. I'm not sure how bad it was stuck, since there was no groove for the screwdriver to fit into. Either way, the first screw was definitely stuck, and came out painlessly once it got a shot of the Blaster, then I washed the joint with warm soapy water to preserve the finish in case any Blaster got on it, though I was very careful. If I used it on wood or hard rubber, I'd for sure put the instrument in a plastic bag or wrap it with cling wrap, then poke the post through the plastic and paper towel to protect the wood or rubber from the rather harsh solvents. But it sure beats a broken post.
Lisa
