I just picked up mine recently so there is little time left to play with it. I know that the unit comes with directions on how to place the height vs the cut height. The question I have is what are you doing to give the best looking visible strip? Just going by the directions or do you lower the roller a notch or two lower? Are you cutting the grass higher and lowering the roller to the lowest setting? I guess what I'm asking is how do I get that perfect visible strip? I understand the type of grass contributes as well? Any comments?