I had a shattered 3GS screen, which I removed. I bought a replacement screen, along with a new mid bezel. I removed the original bezel/screen, and replaced. When I got the new bezel and screen in then turned on to test, the screen wasn't reacting to touch. I went to remove the screen again to tighten the strip connections, but I couldn't remove one of the screws on the bottom of the iphone. It just kept twisting as I screwed. Any ideas on how to remove this screw? I want to sell this phone because I got the iphone 4, but can't get the DAMN SCREW OUT!!! Help please!