I have a precision phillips screwdriver, and I had some difficulty removing 3/10 screws, but the other 7 won't even budge. Is there a specific screw driver I should be using? I'm currently trying w/ the Philips precision 1.6 mm (it has a very uncomfortable metal handle, which might be a problem in getting the screws out). The 2.0 mm is too big to get the screws out. Can anyone help?