Dual plugged points HAVE to have a Dyna booster. They cook otherwise. The advance needs to be modified in order to time dual points correctly. Where is the timing at idle? OT? That could be your problem right there.
One turn out? That is NOT the way to adjust mixture screws. Find the lean stumble point and the rich stumble point and adjust half way between. The screws are very often adjusted differently.
Mixture screws adjusted thusly and still stumbles? Leak down test and listen for leaking valves. They will not idle right with leaking valves and I find them leaking often.
supershaft screwed with this post 08-25-2012 at 12:29 PM