I know it's a philips oo, and I have two of them -- a smaller one from an eyeglass kit, and one from a screwdriver kit I bought from radio shack. I've already caused some scratches from slipping (and gripping the screw driver with plyers for grip), and there are four screws left of the ten to do (one on the side, and three on the bottom near the trackpad area). Been going at this for about an hour. Why did they make the bottom plate impossible to remove? Any tips before I mark up my macbook pro anymore? Luckily they're on the underside so I don't care as much, but I don't want to keep scratching this thing up.