What was found
DURING REFUELING, NR 1 RESERVE VALVE FAILED TO OPEN AND UNABLE TO PUT FUEL INTO NR 1 RESERVE TANK. FOUND EXCESSIVE SHAFT BINDING THAT WOULD ONLY ALLOW PARTIAL OPENING OF THE VALVE. FUELED TANK, MANUALLY CLOSED VALVE. AFTER REFUELING, NR 2 MAIN TANK READ 38.0 & NR 3 MAIN TANK READ 36.6. DURING TAXI, FUEL QUANTITIES CHANGE WAS NOTED. NR 2 TANK READ 30.5 AND NR 3 TANK READ 42.7. A/C RETURNED TO BLOCK. INSPECTED REFUEL VALVES AND RESET SWITCHES. REOPENED AND CLOSED NR 3 MAIN REFUEL VALVE. INSPECTED REFUEL MANIFOLD. FOUND ALL OK FOR SERVICE WITH NO FUEL MIGRATION.