RE: GMS Engine Tuning Problem
Hi Don, though your explanation is excellant,I think you ignored the vacuum effect of engine because of the restriction of barrel to inlet air.I discovered it on cold days on my SK,when my full castor fuel got viscouse.Under half throttle engine was great but when I open throttle it begins leaner and leaner until engine stops.If I pull down the stick then engine recovers immediately.This was only because of vacuum effect.Now hot days I can lean my idle needle more safely without similiar symptom.