As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS SHORTLY AFTER TOP OF CLIMB, EXPERIENCED APPROX 800LBS FUEL IMBALANCE (RT WING HEAVY). AFTER BALANCING FUEL GAGES INDICATED 1-2000LBS LOW W/O A SIGNIFICANT IMBALANCE. MAINTENANCE ACCOMPLISHED DRY CAP OF LEFT FUEL TANK, FOUND NO.8, 9 &10 TANK UNITS OUT OF LIMITS. REPLACED NO.8, 9 &10 TANK UNIT IAW AMM 28-41-21 LEFT FQIS CHECKS NORMAL.