is there a shoulder that the plunger stops on? I am wondering (short of disengaging a plunger) how i would know they have either seated or raised ALL the way?
Located on the end of the brass plungers that T'bolt mentioned. The choke slider has three small hook-like things on each side of the engine that fit into those little slots on the ends of the plungers. If any work has ever been done in that area, it's not unusual to have one or more on each side not in place and you don't get the choking action you need on all six carbs. Just remove the cover and you can see them real easy, right in front of you.