As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE LOST POWER ON TAKEOFF. PILOT ABLE TO MAINTAIN ALTITUDE AND RETURN TO AIRPORT. VALVE APPEARS TO BE P/N 75068 WHICH IS PRONE TO BREAKAGE WHEN USING FUEL HIGHER THAN 80/87 (REF: LYCOMING SB 404). ANY VALVES STILL IN SERVICE SHOULD BE REPLACED.