Crystal Orb and Visiontek cards

[rimshaker]

My Ti200 card needs a hsf replacement. It starts making 'moaning' and 'groaning' sounds whenever i first start up the system in the mornings. It's completely free of dust so i dunno exactly what's wrong. Anyway, is the stock hsf on Visiontek cards (GF3 specifically) easy to remove? I know there are also 2 clips, but is the hsf held on by simple thermal paste, or some thermal pad, or epoxy??