ACR LGT WITH INOPERATIVE FUEL GAUGE AND FAULTY FUELING VALVE HAS OUT OF BALANCE FUEL LOAD AND RETURNS AND LANDS.

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I RECEIVED ACFT FOR SCHEDULED FLT FROM DFW TO EWR WITH THE #1 FUEL GAUGE INOPERATIVE AND MEL STATING THAT IT WAS CLRED FOR OPERATION. MAINT DRAINED THE #1 TANK AND FILLED WITH A KNOWN QTY 11000 LBS (1642 GAL). THE FUEL LOAD WAS TO BE 34600#; 11000 IN #1; 12600 IN #2 AND 11000 LBS IN #3. THE FUELER BEGAN FUELING #1 WITH KNOWN QTY. I COMPLETED MY PREFLT DUTIES. THE FUELER BROUGHT THE FUEL SLIP ONBOARD AND WE CHKED IT TO VERIFY OUR FUEL LOAD. THE SLIP SHOWED 11000; 12600; 11000. OUR 2 OPERATING GAUGES CONFIRMED WE HAD THE PROPER FUEL LOAD. AFTER TKOF; THE ACFT HAD A VERY STRONG ROLL TENDENCY TO THE RIGHT. IT TOOK APPROX 18 DEG LEFT AILERON TO HOLD LEVEL FLT. WE RETURNED TO DFW. ON THE GND; WE HAD MAINT STICK THE #1 TANK. THE #1 TANK WAS APPROX 3000# LOW. MAINT FOUND THAT THE #3 FUELING SWITCH WAS NOT CLOSING PROPERLY. WHEN THE FUELER WAS FUELING A KNOWN QTY IN #1; IT WAS ACTUALLY PUMPING FUEL INTO #3. THE FUELER DID NOT NOTE THE BEGINNING FUEL IN #3; SO WHEN THE #3 TANK REACHED 11000 LBS; IT WAS AT THE EXPENSE OF #1.