Replacing the pads with some good thermalpaste is very useful. I use Noctua NT H1. Lucky for you watercooling is expensive and requires many changes in the case. I have an idea my case though very expensive does not have an extra ventilation in the back In the red area i make the cut using the Dremel, most of the air leaving side and if i feel with the hand that area is always very hot. I'ts a good idea guys ?