As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ASSEMBLY OF THE ENGINE AFTER MAJOR OVERHAUL, ONE OF THE FACTORY NEW CYLINDERS (PN LW15322) HAD A DIFFERENT INTAKE VALVE INSTALLED (PN 73938), AND THE CORRECT VALVE PN LW15314 WAS INSTALLED BY THE CYLINDER SHOP. THIS CYLINDER WAS FACTORY NEW. (K)