I used a heavy duty clear epoxy on it and the single fan from the front keeps the HDs cool and running great. OK so you know here is my new fan configuration....
1 Fan Front panel blowing in to HD's
2 Fans blowing air out on top for the radiator..
1 Fan blowing air out the back
1 200 MM fan blowing across the video cards to help keep them cool.
1 Fan at end of video cards helping draw air through them to keep them cool.
Core temps are around 37* Celsius
HD Temps 35* Celsius
Vid Card temps 40* Celsius idle 50-54* Celsius under full load
I don't think that is bad ... but I will soon be getting a couple of these and making it better... but I have to wait for price to drop alot
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130601Laendart