As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WASHERS ARE INSTALLED AT THE FACTORY UNDER THE HEADS OF THE 4 BOLTS THAT MOUNT THE BARRY MOUNTS, PN 93880-13 TO THE ENGINE. THROUGH COMMUNICATIONS WITH THE MOUNT AND ACFT MFG, DISCOVERED THAT THE WASHERS SHOULD NOT BE INSTALLED. THE WASHERS CAUSE THE BOLTS TO SIT HIGHER AND RUB ON THE MOUNTS CAUSING PREMATURE WEAR AND CHANGING OUT OF MOUNT PREMATURELY.