Does anybody know what size Phillips bits I need for the little, tiny screws on a CD ROM? Getting ready to tear down the hundred or so I've stashed and found I don't have the right one for some of them. There are at least two sizes. Really wondering if it's worth it. Looks like maybe 3 ounces of motherboard grade and a small electric motor. On the other hand, with the right tools, it wouldn't take more than a few seconds.