Yeah, good idea. I (eventually) came to the same conclusion. The only thing I could find that would fit was another stud.
The noiseblocker fans I got come with a very nice noise isolation system which I am keen to use. However, the Black Ice radiators use larger screws, which basically appears to be non-standard and is actually pretty troublesome. So I need to do a bit of a bodge to fit the noise isolation system to the radiator.
Sticky tape hole punched and applied to nuts
Delicate operation of sticking the nut on. it is not easy because the threads are stamped through so there is not a flat surface to stick to.
1 fan installed, 3 to go... Yes I did up the screws too tight - slackened off now.
Same with the top screws for the black ice radiator - it only came with long screws so I had to go through my spares bin to find something shorter that would fit
Top radiator in place
This is how far I am now = the sfan power cables for the top radiator are on the wrong side because I had to put the radiator in the other way due to clearance issues...
This is what the skulltrail looks like with the northbridge / southbridge heatsinks removed.