As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, PILOT NOTICED THE RT ENG RPM WAS SLIGHTLY FLUCTUATING. RETURNED TO BASE & NOTIFIED MX WHO RAN THE AFFECTED ENG & NOTICED THE LT MAGNETO HAD AN INTERMITTENT MISS. MAGNETO WAS REPLACED, GND RUN & LEAK CHECK WAS PERFORMED & ACFT WAS RETURNED TO SERVICE.