As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT CONTINUOUSLY DUTCH ROLLS, ALL ALTITUDES AND SPEEDS- ONE TO TWO DEGREES LEFT & RIGHT. SWAPPED YAW DAMPERS ON UPPER RUDDER- STILL NO IMPROVEMENT. REMOVED AND REPLACED AILERON SERVO MOTOR IAW CE750 MM CH 22-10-01. GROUND CHECKED GOOD.