Using the materials and instructions provided, the processor does not come in contact with the heatsink. To ensure the CPU makes contact with the heatsink I had to use a pad for the eMMC chip and double the CPU otherwise I could clearly see the other side when everything was assembled. I had to redo 5 blocks and will probably do it again once I get new spacers. The radiator is shaped to come into contact with critical Cm4 components after the gaskets are installed. There's even enough room at the top to add a fan later if needed. A NOTICE. Someone wrote "x2pcs" next to the little controller chip to tell us to use two pads there. NOTE 2: They should have included an extra pad for the CPU - 1 no reply to email - 1 the CPU is not in contact with the heatsink and/or it doesn't need to route eMMC for it to work.