I'm trying to put an Accelero S1 Rev2 on my 8800GTX, but it's too wide to fit in the case of my Dell XPS 420. I'm considering cutting about an inch off of it. The fins are no problem, but I'm curious about the copper tubes. They are sealed on both ends. Is there any liquid inside them? If not, I'll go ahead and do it. I'm not worried about the reduced surface area since I'm not gaming and rarely tax the card. Just looking for quiet. Anyone tried this before?