As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FWD INBD GUIDE PIN HOLE ON THE NR 1 ENGINE AFT MOUNT WAS OVERSIZED TO 1.126 INCH DIA TO CLEAN UP DAMAGE FROM A MIGRATED BUSHING. A NEW OVERSIZE BUSHING WAS INSTALLED TO RESTORE THE AREA. THE REPAIR WAS ACCOMPLISHED PER B757 SRM 54-51-02-2, FIG 202 AND ER/A 378101-14, REV A.