vacuum leak at throttle shaft?

Mattax said

Sorry don't believe that the light spring to heavy spring changed the air bleeding in, and certainly not enough that a little more fuel on the mix screws wouldn't compensate. I mean if really bad you should see it's out of round.

But test it out. The toothpaste idea will do. Find something non-abrasive like that or a grease and dab it over the throttle shaft end so air can't get go through. Stick a peice of aluminum foil or gasket material on it. Then nothing is going to get sucked in there. Fire it up and see if you can get adjusted with it sealup like that.

Click to expand...

Got busy last couple of days but changed t a lighter return spring, stretched it some. Other day I had screwed to mix screws all the way in to see where it was set at. All I had room for was a stubby and with the AC compressor, AC upper rad. hose, and fuel lne, and return line to the canister, I missed count!! ha WEll all the non working A stuff is gone and out of my way!! I did not see any problem in the carbwith how the screw went in and out. I blew carb cleaner thru everything.
I have got it running at idle but not great. Maybe today I will have more time to fool with it!
I agree I can't see where the vacuum lose at the throttle shaft has caused such problem.