As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT/RIGHT FUEL TANK NOT FEEDING ENGINE EQUALLY. LT FUEL QUANTITY SLOWER TO EMPTY. ACTING LIKE ONLY FEEDING FROM RT TANK. FUEL RETURN PORTION OF FUEL SELECTOR INTERNALLY LEAKING CAUSING RETURN FUEL FLOW TO LT TANK ONLY. RESEAL FUEL SELECTOR VALVE.