Well, without looking at it or getting more info, I'm not sure what else to suggest at this point. I get the impression that you are assuming you have a problem, and that you have not done anything like using a tailpipe sniffer for example, to verify your hunch?? Have you tried using a vac gauge to set the idle mixture?
It sounds like a $12 carb kit is in your future, at the very least.
Do you have more than one vac port in your intake?
