All right, so I believe my Wii's drive is infested with dust. But I can't take it apart because four tri-wing screws refuse to even budge when I try to take them out. They're the middle ones on the top and the bottom and the ones at the end, if you've got any suggestions for removing them. My screwdriver isn't magnetic, unfortunately, but that didn't stop me from getting the other screws out. And I don't feel like trying to fit the screwdriver into a power drill to see if that'd work. Or is there some way I could still blow the bits out?