440 adding a vapor return line?

thanks for the reply, 850 dp holley.. eddy intake with the heat crossover not blocked under the carb..recently added a return to the tank with the wix filter,,, if my return is working will I have pressuer on the fuel gauge at the carb after I shut it off...and when it does die, there is no pressure on the gauge...I can hold it to the floor it will start and run fine