I finished building my pc yesterday and it was my first time mounting an aftermarket cooler. I did it with some difficulty like the cooler moving around a bit but I think I added the right amount of thermal paste. The cooler was screwed in until the screws no longer turned and so it is pretty flat on the cpu. I am using an i7 9700k with a Noctua U12S. I ran a standard IntelBurn test and the results have me a little worried. (temps were captured with HWinfo 64) The max temperature was in core 2 with 85c and the lowest max being 74 in core 7. 5 of the cores were 80c and above. These seem really high to me and I am worried that I messed up the installation of the cpu cooler. If more info is needed I am happy to test it again.