When I got to this step, I had trouble pulling up the heat sink. I even double and triple check to see if anything was holding it down. I used force but was able to get the heat sink out. The CPU was attached to the heat sink and the CPU was still in the lock position . It looked like there wasn't enough thermal paste and the CPU sealed itself to the heat sink. I was able to scrape off the CPU from the heat sink using the iSesamo to gently pry around the perimeter. When the CPU was off there was residue on the heat sink that I was able to clean off with a razor blade. Before placing the heat sink on top of the new CPU, I did do the "tinting" process to make sure the sticking wouldn't happen again. Not that I want to open up this box again!