I am also having trouble with the top middle screw. After working to turn the screw it became stripped. Very gently and very slowly I drilled away the head of the screw, and completed the disassembly. But the rest of the body of the screw is still in the post, and it seems too risky to try to drill anymore. Any advice on how to remove the rest of the screw or resecure this section when I put everything back together?