I am having problems getting my low end right on my ys 110fz. Where are your settings for your high, low, and regulator? I know I have the high right actually. I used a tach and that is pretty easy for me. The transision from low to high is good too... but.. my idle is always rough. I have tried everything on the low from all the way screwed in (rich) to 3 1/2 turns out. I did balance the prop too.