It's been a while since I built a pc and I dont really remember every step I took...
When applying thermal paste to the cpu, I know you completley cover the cpu with a light coat, but do you put a light coat, covering the bottom of the cpu cooler? I will not be using a stock cooler. Im using a cooler master hyper 512.
you want to put a small drop in the middle and let the CPU cooler push it out so that it ends up covering the CPU, the light coat needs to be super thin. Too much thermal paste will actually hurt heat transfer.