I would pop that bitch off and get one of these:
http://www.xoxide.com/zachco.html
I took my loud-ass grinding chipset fan/heatsink combo off my NF7-S and put that on there. Works perfectly.
DISCLAIMER: This bitch is hard as HELL to put on, so be prepared to take out the motherboard for installation. The parts are fucking small as hell and break easily. It's worth it once it's installed, but be very careful during installation.