yes with the high adjust for peak and then maybe open the high a screw driver blade only for that small amount of richness. move each needle a screwdriver blade at a time as a little goes a long way on a gas motor. Adjust the low end for as close to clean mid range as possible, the low end will still have a slight burble to it. After all is set pull the plug right after flying to see if you are running the pretty tan color and not gray or dray black. of which would incicate lean or rich.