Chosen Solution

I am using the guide “MacBook Unibody Model A1342 Heat Sink Replacement”. Althought I have the right screwdriver, Philips #00, it didn´t seem to fix exactly. Or maybe the screw was just stuck. Anyway I have broken it. Not the #00 screwdriver fits at all, nor anyone else. The cross in the screw has become to big. Any suggestions how I can turn up the screw now?

Sometimes it helps me if i choose the screwdriver that looks to match the broken screw the best and then apply a lot of pressure on the screwdriver while turning it around. Has help me a few times. I usually stand up and have the thing on a stable table.