I thought the same until someone here posted up differently. It was a dual ring race TQ. These carbs are not seen everyday. I would assume you have the 1,000 unit.
Cali maybe different on this. IDK. Bewy mentions plugging up the vacuum ports. The ones inside the primary barrels (if equipped) should also be handled. I had one such TQ. I could t get it to go very well. It was a long time ago, so, I don’t know what I missed.