So I'm attempting to remove the power supply of my powermac G5. I've been following an iFixIt guide. (http://www.ifixit.com/Guide/Installing+Power+Mac+G5+Power+Supply/1893/1) The problem is, I'm supposed to loosen 8 t-10 screws. I've gotten 6 of them, but 2 of them are deep inside a hole in what I think is the cooling unit, and my screwdriver/extension aren't long enough to fit down that far. This unit looks completely different from the one in the guide So my question is what do i do next? As the picture shows, there are 8 round...caps? nuts? on the cooling unit..can those be removed to help access the parts I'm aiming for? Do I need to find just a much longer t-10 screwdriver? Any help is appreciated.