New Jersey Thermoquad rebuilder?
The 2 sizes of the TQ are generally given the cfm ratings of 800 and 850. Kim said 750. As in 750 and 800 cfm sizes. Ethier way, the carbs is easy to rebuild. Dunk it in carb cleaner, wash with water, blow it out with compresed air. Clean all rust off the metal parts and don't forget the "O" rings!
Take the time to make sure all the linkage parts are set up correctly.
Go for it.