As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT HAD MAGNETO LEADS THAT NEEDED TO BE REPLACED. A NEW HARNESS SET WAS RECEIVED AND WAS INSTALLED ON THE ENGINE. THE ENGINE RAN POORLY. FOUND (T-4). ALSO NOTED THAT THE SHIELD ON NR 1 BOTTOM WIRE HAD BEEN CUT DURING MANUFACTURER AND THE SHIELD WAS OPEN. MFG REPLACED THE HARNESS FREE OF CHARGE AND FREIGHT FREE. (K)