Would like some advice. My right carb continued to flood out through the air tube with mechanical fuel pump at about 4#s. Put a pressure regulator on the gas line with a setting of 2#of pressure and bypassing the electric fuel pump. The pressure gauge when running shows 2.5 # and the flooding stops. The engine runs smooth at various rpms with run-up to 5000psi. Everything seems good. Question - is 2.5 lbs. of gas line pressure adequate for flight? If so, i will replumb through the electric fuel pump which i only use for takeoff and landing. Would appreciate your thoughts! thanks.