@JB356SR Ed is right, but honestly we're all guessing. I've seen HUGE motors with small idle jets, and small motors with .60 idle jets. It all depends on how your total combo works: it's about efficiency or lack thereof.
Synchronization at idle and of the linkage is very important, as is setting the idle speed and volume screws(engine must be warm). Do you have engine tin separating the top cool air from the hot exhaust air? Do you have the doghouse pieces so the driver's side carb isn't getting hot air blown on it?
That cloud of atomized fuel(reversion) was still there no matter which velocity stack was on there. I definitely recommend using stacks though vs. none. It made all the difference in the world for Joel(may he RIP). My problem was the short stacks allowed the reversion to interfere with the idle intake air. The CB jet doctors had the snorkels right at the edge of the short stacks. The reversion screwed up the mixture during transition, but I can't remember if it went lean or rich.