Almost too easy actually. I went to the hardware store and bought a bag of nylon washers, like 1/4" diameter... also bought longer screws that matched the thread pitch of the retention bracket>to underside bracket.

Remove stock retention frame. Add approx 7 washers under each retention frame "foot". This lifts the factory retention frame up high enough so that ANY s478 heatsink/fan that uses clips will fit. Then use the extra long screws to attach frame to underside bracket. Tighten her down and ready to go!

E-Z as pie.

Right now I'm using a CoolerMaster Hyper6 with the stock hyper6 clips. Just keep testfitting the hs/f and clips and adding additional washers (or removing them) to adjust the height.

Pic's later!! Works great, try it guys!!

C