Also bear in mind that if you remove the heatsink from the CPU chip, you should by rights replace the thermal transfer paste between the heatsink and chip.
Having a poor thermal connection between these two items can cause overheating issues too.
Try finding the stuff though, with Bestbuy and Circuit City putting every CompUSA and mom&pop computer store out of business. I've been looking for the stuff for three weeks because I realized the heatsink in my G3 Powermac had fallen off...
I finally ordered some online via
www.newegg.comIan A.