ORIGINAL: Matt
I heard something about you will basically only need to touch your high screw....and your low screw is ONLY to get your plane to idle.....? Is that right?
Not necessarily. The low speed screw will affect idle mixture and mid-range so it does have an affect on the transition. I'd turn the low speed screw 1/16-1/8 of a turn at a time until it transitions well after 30 seconds or so of idling. My guess is that you'll have to lean it slightly (clockwise) so I'd start there. Hard to say without actually seeing it though so you may end up having to go the other way. Do this with a warm engine.
32:1 will be just fine. It's also easy to remember and measure 4 ounces of oil for 1 gallon of gasoline.