As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FUEL GAUGES INDICATED FUEL IMBAL. UPON LEVEL OFF AT CRUISE FLIGHT. AIRCRAFT RETURN TO AND LANDED SAFELY AT MIA WITHOUT FURTHER INCIDENT. ACCOMPLISHED FIM TASK 28-21-00-810-814 NO FAULTS NOTED. OK FOR SERVICE AT THIS TIME.