I just spaced those notches as evenly as I could. I think the only thing that may be critical is the first lining you stack on has a smaller inside diameter than the others. I think the clutch setup I did in my photo layout is a Tusk. On it the lining with the smaller ID didn't have any notches on the outer perimeter. If in doubt measure the inside diameter. The difference is quite noticeable even by just lying them on top of each other.