As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW AIRCRAFT AND NEW ENGINE. ENGINE RAN ROUGH ON TAKEOFF, TOP COWL REMOVED AND COLD CYLINDER ESTABLISHED. UPON REMOVAL OF FUEL MANIFOLD, WRENCH WAS APPLIED TO INJECTOR AND ASSY TWISTED IN HALF. INJECTOR WAS BROKEN LONG BEFORE ATTEMPTED REMOVAL. A SECOND INJECTOR APPEARS TO BE CRACKED IN THE SAME LOCATION ON ANOTHER CYLINDER.