What was found
AFTER TO RT MAIN FUEL QTY WENT DOWN TO 8.11 (FROM 8.57) WHEN THE CTR TANK BURNED DOWN TO 045 THE RT MAIN QTY CLIMBED TO 8.57 (DID NOT NOTICE A CHANGE IN TOTAL FUEL) TOTAL AGREES WITH INDIVIDUAL TANK QTYS WITH RT MAIN AT THE HIGHER VALUE AND FUEL USED, ADDED TO MAIN MATCHES OUR RAMP FUEL. PERFORMED OPS TEST FOR QTY INDICATING SYS NO PRESENT FAULTS, GROUND TEST PASS. VERIFIED FUEL IN NR 2 MAIN TANK WITH DROP STICK FOR ALT FUELING PROCEDURES. SUMPED NR 2 TANK IAW 12-11-00-680-801, NO WATER FOUND.