I own an Asus A8N SLI Deluxe motherboard. This motherboard, as many of you may already know (Especially if you own the board... *sigh*) that the northbridge fan is notorious for failing! Anyways, I've replaced this fan once under warranty but... I would like the quiet things as much as possible. So I have seen numerous people recommend the Zalman ZM-NB47J northbridge cooler. My question for you is, can I modify this heatsink? I have two BFG 6800 Ultra video card that would be blocking a few edges of this heatsink. But I think if I cut the top halves of a few 'fins' it would fit quite perfect. Will this effect the cooling and heat transfer of the heatsink? I can take a picture to show how much need to be trimmed... I am thinking about.... 5 to 10 just be looking. What do you think?