I like it. as for.straightening the edges, maybe a diamond file.on a Drexel and a steady hand? or some trim. I would probably cut the opening even bigger to allow use of a rubber corner trim. and maybe make it more rounded than square. that might fit the controllers contour better. a question on the brake controler, what does it do exactly and how is it installed? I never used one but it looks like my truck is set up for one. I have 2 12 gauge wires and 2 18 guage wires under my dash that aren't factory. and 2 screw holes in the typical brake controler location. is 4 wires enough for a brake control?