Thanks, I appreciate the links... I saw the unit that Unwired Tools sells, actually I talked to Steve there, and he told me about pushing on the airflow plate to see if it would cause the mix to lean. (He said if you push on the plate and it leans out, then the warmup regulator isn't working properly, not enough pressure.) I'm somewhat interested in their unit, but it's pretty spendy. I would go for the adjustable one with the gage, I think. I will check out the book you mentioned, also the link.
