As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GOVERNOR WAS LAZY AND SNAGGED BY PILOT. UPON FURTHER INVESTIGATION, THE MAGNETO WAS REMOVED AND PRIMARY COIL WIRE WAS TOUCHING AND CHAFING ON TACH POINT CONNECTOR. THIS MAY BE THE POSSIBLE CAUSE FOR LAZY GOVERNOR. NEW MAGNETO INSTALLED PROBLEM RECTIFIED. MAGNETO SENT BACK FOR WARRANTY. (TC NR 20070307010)