As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSTALLED SHAFT IN AIRCRAFT AND COMPLIED WITH INITIAL BALANCE RUN, AFT BEARING SLIPPED ON SHAFT AND EXCESSIVE HEAT ON ALL BEARINGS. CLEANED AND REINDEXED BEARING, ON SECOND RUN, 3 BEARINGS SLIPPED EXCESSIVELY AND COPIUS AMOUNTS OF GREASE SLUNG FROM ALL BEARING AND ALL WERE VERY HOT.