a magnetic exchangeable head screw driver long enough to reach the torx screws that hold the CPU heatsink onto the logicboard? According to this guy, the shaft needs to be at least 20 centimeters, or about 8 inches. I'm not having much luck. Help me out? edit: THIS interchangeable head screwdriver looks like it will work, and it has a magnet in it, so that is a good thing. I'm just not thrilled with the $17 shipping.