check the seating of your block make sure that you are tightening across the block (like an x) this way you can get a better seating. Lapping helps a lot too. Hey fixitt I have been watching make your blocks since way bacvk in the beginning when you were sellign them at the hardforum I have been wanting to buy one but the waiting time is a killer. Is it any better now? LMK as I would eagerly buy one. Especially if you have a video chipset one as I am thinknig of bong cooling my radeon 8500 after a volt mod.