Holley stumble trouble

If you recall when I got those Holly Street demons I had twice the trouble LOL same problem. Couldn't get a big enough squirter in there to cover the problem. It ended up being in the transition rods for the primary circuit. They had to be offset from one carb to the other. of course absolutely none of this helps you but my question becomes about the vacuum advance. Right at the beginning you said that when you took it off it ran fine. Which took away basically a vacuum leak.. it was always my understanding that vacuum advance was for Economy cars. Are you trying to get some economy out of this car?... When I had one on my car I plugged it but now my MSD doesn't even have one on it.. I was wondering what benefits you were looking for having it?..
Besides this stumble you're having lol...:poke:...