As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LH MAGNETO WAS REMOVED FROM THE AIRCRAFT DUE TO INTERNAL TIMING SHIFT, WHILE THE TECHNICIAN WAS INSPECTING THE MAGNETO, IT WAS FOUND THAT THE ROTOR HAD EXCESSIVE AMOUNT OF SIDE TO SIDE MOVEMENT. THIS MAGNETO WILL BE SENT BACK TO THE ENGINE OVERHAULER UNDER A WARRANTY CLAIM.