So I was able to take the swiftech ramsinks off my old 7800GT but now they aren't sticky enough to really stay on my 8800GT ram. I cleaned the ram with AC cleaner, should I tear off the old white stuff on the bottom of these and use some kind of thermal tape? I already installed the thermalright sinks to the PWM mosfets, so most likely those aren't coming off when I go to sell the card anyway. What would you guys suggest for reattaching these things?