Nice work KIK! I actually decided not to buy this controller because of the dark corners... funny that is is a simple matter of grinding the metal out of the way.
I'm wondering if perhaps there is room for a white 4" cathode tube in the controller to help bring the illumination on the top of the arc up to the same brightness as the rest. Nice job witht he paper, I have used the same technique to help diffuse the light in my CoolerMaster V8.
Feedback/Rep: Heat -- eBay
There is an elegant solution for every problem... and sometimes elegance comes in the form of a very large hammer.