As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
30 MIN OF FLIGHT, 0.5 OF FUEL FROM RIGHT TANK TRANSFERRING TO CENTER TANK. NO CROSSFEED WAS USED. LT TANK SCAVENGE PUMP BEGAN PULLING CTR TANK FUEL AT 60% WHICH CAUSED 1500 LB IMBALANCE AT 1HR MARK. RT DEFUEL VALVE BODY OPS CHECK GOOD IAW AMM 28-26-01-790-801.