Hi, was just wondering if this solved the problem for you? I've got the same issue and am thinking of doing the same as you.
The collected works of hoofer
I actually went ahead and did it myself last night. At first I thought I'd broke it because I couldn't hear a thing! It worked fine though. The only small snag was that only 2 of the three fans are 10mm in depth, the third is 20mm as it connects directly to the long heatsink at the front so I've had to order a deeper mini-kaze. Other than that it was easy as pie and it works fine and makes virtually no noise!