Hi guys, I have been reading the thread for a while and decided to give the mod a go on my tx1000. Everything went well except for the lapping part. Since the copper surface of the heatsink is inside, protected by the black thing, I have no luck in flattening the surface, let alone making it shiny. I cannot perform the conventional lapping technique. I have totally scratched up the heatsink and cannot fix it. Before I "lapped" it, the processor was at 35*C when I was watching youtube. Afterwards, it shot up to 60*C for just booting the computer on. If you guys can give me a tip on how I could fix it, I would appreciate it. I have been tx1000-less for a week now and it's driving me nuts coz I cannot do HW. Thanks a bunch. And how much Arctic Silver should I use? A thin strip? A thick layer? A dot? Should I put it on GPU and CPU and should the amount be the same on each? Thanks again.