Hi Dave, I adjusted the engine as you recommended, here's what happened, I needed to lean out the high speed to 1 1/4 turns from closed, I left the low speed alone. Idle was still terrible, I would close throttle to 2800rpm and the engine would slowly wind down until it stopped, it took about 45 sec to 1 min. Transition from idle was slow @ 5 seconds to reach top rpm of 1100, What do you think, did I ruin the silicone parts in the engine like you feared?

Jeremy