Howdy,
I actually installed my brand spanking new FOP38 last night, wasn't nearly as hard as some would suggest. All you have to do is secure the "fixed" side of the clip, place the HS squarely over the proc and push the other side of the clip down with a screw driver (within the actual finns to reduce the possiblity of slipage) and use your other hand (index finger) to guide the clip all the way down (also exerting some prussure.) Really not that bad.
Additionally, the noise is also way hyped up. That to is not that bad. Keep the grill off and no whine at all, just the whir. It sounds like you were just a foot over your box and your case fan was on. Damn good little fan if you ask me
Though my MSI K7T Pro2a is pissing me off...