What was found
THE FUEL QUANTITY INDICATED ON RIGHT GAUGE WAS SHOWING A COUPLE THOUSAND POUNDS MORE THAN IT ACTUALLY HAD. THE RESULT WAS INACCURATE FUEL TRANSFERRING LEADING TO FUEL IMBALANCE. THIS HAPPENED FOR 2 HOURS AND THEN RETURNED BACK TO NORMAL INDICATIONS. TROUBLESHOOTING CARRIED OUT, WATER SUMPS DRAINED AND FMQGC TEST CARRIED OUT IAW AMM 28-10-00-680-801 R52 NIL DEFECTS. OPERATOR TO MONITOR.