/6 Idling Problems
Ok, so after reading all those threads and links on carbs over on dot org (thanks, Dan), I see that the correct info on the vent clearance for what year carb you have is not given. Is this possibly why there have been so many idling problems for the Holley 1920? That is way too scary to contemplate.
Anyways, you have to learn to check things out for yourself using period primary source references and don't believe everything you read on the internet.