As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND ABOVE NORMAL TENSION ON REAR SPINNER BULKHEAD WHEN INSTALLING SPINNER, THIS NEW PROPELLER MAY BE THICKER THAN ORIGINAL PROPELLER WHICH USES THE ORIGINAL SPINNER AND BACKPLATES FROM THE 160HP ENGINE. 350 HOURS SINCE STC MOD NR SA 4428SW.