I picked up a leon front splitter today which i'm going to fit this weekend and i'm after a bit of advice. I know i have to cut the two columns down in the middle, question is how much do i cut off them, is it flush to the splitter or just the 2 clips on the top? Also how do you attach it? does it screw into the underside of the bumper and if so what screws did you use? Cheers, Dave.