The cline seems to make the highend needle a little less sensitive. In fact, a quote from the Cline website states:
When adjusting the mixture, you will find that the needle will not be as sensitive as it was without the PCFS system installed. This is normal. You will find that the mixture will stay where you set it all through the run, from full to empty.
I think on average, the cline will make you turn the needle out maybe 1/2 to 1 turn from where you'd normally have it without the cline. No big deal.
I just checked mine and it was 2.5 turns out instead of 2.25