My friend and I took apart my PowerBook G4 DVI following the instructions from PBFixit.com (http://www.ifixit.com/Guide/33.15.0.html). The instructions required us to remove the heatsink from the processor. Thus, splitting apart the thermal paste that surrounds the processor. Now, as we are reassembling the computer, we are wondering if we should scrape off the old thermal paste (which is still there but not together) and reapply new paste. Do we need new paste? Or would will be alright with the current paste? The paste is dry of course, but it was dry when we removed it as well. Any help would be appreciated.