As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPINNER BULKHEAD CRACKING AT 50HRS TKS WAS INSTALLED BY AIRCRAFT FACTORY. 1ST BULKHEAD REPLACED AT 104 HRS, 2CD BULKHEAD REPLACED AT 249.5 HRS. COULD NOT DETERMINE IF THE PROPELLER EVER HAD A PROP BALANCE. FOUND OIL COOLER MOUNTING ANGLE CRACKED ALSO AT 249.5 HRS