For some of us I guess it's just "WE DON ' NEED NO STINKIN GAUGES!"

The car will tell you pretty much right away if you are in the right range w/ your setting. The same symptoms seem to come up on this board all the time. And that trick for finding the sweet spot is a handy "tool" in its own right.

I really have nothing against gauges. I also have nothing against someone taking the car to a mechanic for anything he does not want to do himself. Different strokes and all that.

Doug, I posted that question some time ago, and the responses I got from those who had used gauges and recorded the amount of change in % led me to the 8% figure, although noone had actually adjusted it as
far as 8%.

Since these cars will run (with varying degrees of success) with settings from 1% to 4% and 3-3.5 being what seems to be optimal, then if someone is getting that too rich idle hunting, then leaning by 1/16 increments shouldn't be harmful. If things don't seem right, you can always set it back.

And if you are smog exempt, who cares what your exact reading is anyway.