BKDavy, yes I'm adjusting the correct needles. And no offense taken, for sure. The way you characterize my transition problems is right on - after a long idle, if I punch it it will die; after a short idle, if I punch it, it over-revs then settles down. My theory was that it was building up fuel as it was idling - idle too long and it builds up so much fuel that it chokes off, idle a shorter time and it burns it off then settles down to its high-speed setting. But your description makes sense too. Like you say, "it's subtle." Amen to that. Electric is looking better and better.

CGRetired, I'd have bought an OS but I'm trying to save the bucks. Since you never got your Evo 1.00 to run right, could it be that you were mistaken and were actually too lean all that time, not rich, as BKDavy suggests?