One thing that is sometimes over looked when the idle is high, or unresponsive, are the end carbs, not being properly closed at idle, make sure the end throttle blades are fully close,if not, the possible causes usually are: improper linkage adjustment, or throttle blade/bore base plate misalignment, a nick/gouge in the base plate bore/blade that's keeping the thottle blade from fully closing, this might be the source for some of your idle woes



Thanks I'll put that on my list.