As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO PAST ISSUES WITH FUEL SERVOS MAINTENANCE STARTED DOING A FUEL SERVO VENTURI INSPECTION AT EVERY 100 HOUR INSPECTION. DURING THIS 100 HOUR INSPECTION WE FOUND THAT THE AREA BEHIND THE FUEL SERVO WAS CONTAMINATED WITH FUEL. IN THE PAST THIS CONTAMINATION HAS CAUSED ENGINE FAILURE. MANUFACTURE HAS INSISTED THAT THE ISSUE IS OVER-PRIMING. HOWEVER, THE MANUFACTURER STARTING PROCEDURE HAS BEEN FOLLOWED WITHOUT THE USE OF PRIME AT ALL SINCE THE LAST 100 HOUR.