Wells that's the problem isn't it? I'm in a hurry and just want to drive! Honestly though, I spared no expense, even on the carbs. He's done other carbs for me before. It seems like the left one (bank 2) is the one that spills fuel but I assumed it was because its closer to the pump.
My reason for asking if only one carburetor seemed to be flooding was to possibly consider a fault within that carb's fuel management — instead of focusing on the fuel pump as the source of the fault. The proximity of the carburetor to the fuel pump would be an unlikely cause.
You should not assume perfection in the carburetor rebuilds. One flooding carburetor may have earned an inspection to rule out the possibility of faulty assembly or components. Removing power from the fuel pump would not rule out a leaky fuel inlet control in the float bowl. It would simply starve both carburetors... including the potential faulty carburetor with bad fuel inlet control.