Originally posted by: mechBgon
I have the SK-7, not the SLK-800, but this still may apply:
The clip on the SK-7 isn't "indexed" in the heatsink. You can move the heatsink back and forth along the clip a bit. When I installed my SK-7 the first time, it happened to be towards the screwdriver end of the clip, and it got high-centered on the solid-plastic section of the CPU socket, the part where the locking lever is hinged. I had to unclip the clip, hook the non-screwdriver end, slide the heatsink as far away from the solid end of the CPU socket as possible, and then clip it down, so that the situation shown in Figure 14
here didn't arise.
If it isn't that, then I don't know what it could be, unless you reversed the heatsink completely.