I don't have my components all together yet, so I can't build yet, I'm in Florida and my barracks is in Japan, but I'm starting to lap the heatsink just because I want the absolute best temps i can get. I'm going to do the same to my XP-120, and I expect that having 2 copper mirror surfaces with a "microscopic" bit of AS5 between will produce the most efficient heat transfer. I have the blue plastic trays that the cpu came in, (OEM) so I can use that with the antistatic foam as a handle for sanding the cpu, but I was a little nervous that the sanding might build up a serious charge.