I'm trying to get my old head around the Asetek installation, thanks to the amazing instruction-less supply.
Try looking at http://www.asetek.com/media/1797/asetek-installation-web.pdf
That's the equivalent of how I did it on my older Coolermaster case. You can fit the fans to the underside of the radiator (long screws), then the short screws with washer from the outside of the case into the top of the radiator. Different schools of thought as to which is more effective, but looking at the accumulated dust I couldn't see on my old cooler where I had fans underneath for the last four years, by having the fans now on top of the rad I'll know if I need to clean it .....So I add a washer to each of the 8 long screws, pass that through the slots in the roof of my new Luxe, through the fans and then screw them into the radiator?
Make sure you check you are pointing the fans the right way - I set mine to exhaust from the case.
I assembled my stuff to see how it fitted, then cleaned and used the thermal grizzly. I'm sure if it wasn't effective it wouldn't have been part of the supplied bundle.Is the pre-applied thermal compound on the Asetek much worse than the Thermal Grizzly?