Sync tubes? Don't know anyone off the bat. As far as I can tell the two end carbs do have accelerator pumps, and by way of how the car acted when they were opened up I can only ASSUME they're workin, but we know how that goes. The car does run fairly well on the one carb, but I'm thinking the other 2 are presenting opportunity for vacuum leaks, cause the min. air bleed screw is run almost all the way in. I've tuned many carbs, but never a 3 duece, is there any way I can adjust them without having to buy a tool that may never get used again? Am I looking in the right direction with my thinking, or spinning my wheels aimlessly? Like I said, he's tickled with the way it runs, I am the one that's not completely satisfied, and I know he'd like to have all three working together, and not just have the look of the setup.