@wokka, yeah i see what you're saying, but on all of the necks i've tested mine on, F or G scales, you need to line that end notch up over the first fret. Maybe i do have a Dud rule? If i do as BW is doing, i get the same result, if i put that very end notch over the first fret, all the slots line up over the frets all the way down.