Those look like CB550 carbs, correct?
Also when i tighten down the deckplate the choke will rub on this spring. Is that suppose to happen. If i screw in the main idle above the #4 carb this will make this gap bigger and no rubbing will occur. I'm afraid that it will idle to high if i leave it in a non-rubbing position.
That "spring" that contacts upon closure of the cloke it your fast idle cam. That's supposed to touch when the choke is applied, propping the throttle open a little bit to help the bike warm up so you don't have to sit there with your hand on the throttle grip. When the choke is fully off, the cam should not touch the spring-loaded follower. If it does, the follower has an adjustment screw in it, but I wouldn't make any adjustments to it until you have everything reinstalled on the bike.
When you screw in the idle speed screw far enough, it props the throttle open wide enough that the fast idle cam won't touch- and the bike will rev like crazy, as you correctly suspect.
I'm not sure what to tell you RE your other questions.