As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW CAMSHAFT AND LIFTERS WERE INSTALLED AT ENGINE OVERHAUL. ENGINE DISASSEMBLED AT 781 HOURS TSO DUE TO PROP STRIKE. TWO LOBES AND LIFTERS WERE SPALLED, ONE SEVERELY, THE OTHER TO A LESSER DEGREE. THE TWO LOBES INVOLVED ONLY OPERATE ONE VALVE EACH. THE LOBES THAT OPERATE TWO VALVES SHOWED NO SPALLING.