As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CYLINDER NR 6 ON A NEW PRODUCTION ENGINE HAS THE CYLINDER HEAD ORIENTED 2 DEGREES CCW RELATIVE TO THE BASE AND THE OTHER CYLINDERS. THIS PUTS THE EXHAUST FLANGE SURFACE OUT OF ALIGNMENT WITH THE OTHER CYLINDERS AND THE PUSH ROD HOUSINGS ARE ASKEWED ACCORDINGLY.