So I was changing the thermal paste just cause I was bored. Made a slight difference. 2-4c but what I really wanted to check was the copper shim size for an aio cooler. The gpu is 25x20mm and the thickness of that should be 2mm. That is the measurement from the square metal protection around the gpu up to the top of the stock cooler plate. And the gpu and that metal protection should be the same height so you don't overtighten the screws? I seen some say 1.5mm but that should leave a gap of 0.5mm?