Order everything. Thanks for the write up. Should be here in a few days. That's the reason why my heat bed relay clicks in and out every so often. The period in cools and warms up makes for a noticeable difference. Do you think the relay and heat sink have space maybe for a fan also. Or it should be fine the way you set it up. I got artic silver 5 with my order. Also have you checked to see if print quality have improve in other print's that are not the cube.