I tried doing the DD block with just TIM and well, i guess it didn't work for me. the block just would not sit flush with the VRMs... when i used a flashlight i could see a gap between the block and VRMs. i went as much as making it as tight where the card would actually start to bend.. anyways.. i guess its like the lotto? maybe some people will be lucky and get a block that is more thicker and be able to touch the VRMs. well, at least i gave it try..