As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT HARD TO START WHEN ENGINE IS HOT. CHECKED MAGNETO TO ENGINE TIMING. COULD NOT GET RT MAGNETO (S/N 540710) POINTS TO OPEN OR CLOSE. REMOVED MAGNETO FROM ENGINE AND FOUND GROUND ON COIL MISSING SCREW. COIL FOUND TO BE CRACKED AND OPAQUE IN COLOR INDICATING AD 94-01-03R2 AND MSB 644 HAD NOT BEEN ACCOMPLISHED. TECHNICAL RECORDS INDICATE ENGINE JUST HAD FIELD OVERHAUL. TIME ON ENGINE IS ONLY 14.3 HOURS.