Rich idle, would this help?

Snake said
Hum u pulled the power valve you know if you drop it in gear and vacume falls to below 6.5 its going to idel rich.

Snake, I have read many differing opinions on this subject. I have checked many different sources and have come up with - the power valve has no affect on the idle circuit. I'm all ears if you have an opinion you want to share. Once I get the vacuum checked correctly I will choose the power valve for off idle performance.

From a different thread.

doktor_x said
The power valve shouldn't be doing anything at idle. This is the reason for turning the idle screws all the way in to check if it's blown. If it's intact, closing the fuel path across the idle screws cuts off the fuel source and if it keeps running, the fuel has to be coming from somewhere else. Its purpose is to add fuel when the engine is under a load (low vacuum).

I'm kinda wondering now whether it's a rich carb or weak ignition. Timing is right at 20* but the spark isn't awe inspiring.
TrailBeast- I read someone post on one of your threads that your ignition setup cleaned up their engine. Have you seen this to be the case?