I looked at Lang's and Snyder's websites; I didn't see any Kingston 4 Ball parts.
Does anyone know where these parts can be found?
Box it up and send it to Russ Potter or Stan Howe. Either will do an excellent job . Meanwhile,you can be getting some other stuff done.
There are no parts for the 4 ball like there are for the other carbs. You have to make a new float, machine the bowl for a better needle and seat and actuator arm. Machine the ball seats so they are round again, then replace the brass balls as they are almost always worn out of round and don't seal as they are designed to. Throttle and choke shafts have to be machined, they are not the same as any other T carb. The adjustment needle is different from any other Kingston.