I haven't lapped the CPU, and I didn't ever plan on it. I was refering to the base of the GTZ itself. It seems very dull and lacked the mirror finish it once came with.
that being said about the "clamping force", I did feel like after I switched brackets on my GTZ (775 to 1366) it seems like it never really clamps completely.
I completely forgot about that!....yup, that could be the problem right there