Idles higher anytime afr approaches 15+.. Re-gasketted, checked all hoses and connections for leaks, timing and curve are basically the same. Machined the blank jet but not far off what was in the kit. Internal mixer leaks? Throttle blades are really large for a one barrel and I cannot drop the idle any lower off the idle stops without them sticking. Seems to be a fair bit of clearance around them for air to leak by. It was a used system. I can drop the idle rpm if I run quite rich and drop a bit of timing. No vacuum advance hooked up. Seems to be my only options at the moment. Run a rich afr or change part of the system. Don't really want to run it rich if I can help it.
I do agree that GRAs are a pain to tune but once you know how to tune them it's really not all that complicated.
Yes , I have a pretty good idea now what does what and I can get afr into a normal band. It isn't all that complex once you get the basic theory down and if these were new and did respond accordingly wouldn't be so bad. I stuck with trying to tune them longer than I usually would have due they run so nice on this at higher rpms. So yes, I'm probably knocking them a bit due I got used parts that aren't working as they should. Pretty well impossible for a long distance diagnosis on this I suspect.