hey guys, I have an eMac 2002... I am trying to clean the heat sink and the microprocessor on my logic board so that I can apply new thermal paste. I heard to use 90% alcohol, anyone who tried it? Another thing, I know this is for iMac and Mac minis but maybe some of you had an eMac before... There is a film on the microprocessor covering the whole square like a thin clear plastic one, does that come off before the new thermal paste or not? And also my optical drive carrier again from the older eMac like all has a metal heat shield. The service manual calls for a cotter pin to hold it in place. I do not remember having a cotter pin there when I was disassembling it. However there is this plastic pin I found on the floor that may have popped without me noticing while I was taking it off. It looks like a screw but plastic without the threads instead a pop in type of kind. Any clues? Can this be the pin?