Cheryl, The wandering idle tends to be from either the vacuum advance moving, the advance plate moving, or teh advance weights not behaving. That cam is a little bigger than stock, but if things were all perfect, I don't think a ragged idle would be present. For simplicity, keep the advance unplugged and the line t the carb capped. I woudl also pull the cap and rotor, and look at the distributor carefully. The fast way to fix it IMO is to replace it with an MP unit. The slow way is to pull it apart and inspect the centrifical weights and springs, and throw a curve into it if things look good. You have to have a stable, consistent spark to set timing, and you can't set the carb properly until the timing is set. I dont think you should need any outer carb adjustments. Just jetting, maybe a power valve, and set the idle speed and mixture.