As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATL/MBJ - FLT JM 056 - AIRCRAFT HAD TO DIVERT TO MIAMI DUE TO AN IMBALANCE OF 400 KG IN FUEL. IT WAS CONFIRMED THE LEAK WAS FROM 3 ANCHOR NUTS. THESE NUTS WERE REPLACED AND SEALANT APPLIED. NO FURTHER INCIDENT OF THIS NATURE HAS RECURRED. (X)