you use bolt through kits on heavy heatsinks.. most heavy ones come with their own mounting kit anyways because the push pin mounting Intel uses is crap..
Yep. Mounting system is BS.
I went to Home Depot, scrounged through my junk box and made my own bolt through kit.
On a happy note, I have one cooling a Q9450 @ 3.2 and it does a fine job...well, at least better than the stock cooler and it is quieter. Good bang for the buck imho.
The freezer 7 pro got my old E8400 to 4.4ghz stable, the mounting style may look like crap but it does work very good. I would rather use a bolt thru kit but if your gonna do that you may aswell buy a different cooler that comes with that kind of mounting hardware