As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE TORQUING OVER AND CONTACTING COWLING WITH NR 6 ROCKER COVER. THIS ACTION HAS WORN HOLES IN TWO ROCKER COVERS AND IS WEARING ON THE THIRD ONE. THE HEAT FROM THE EXHAUST IS CAUSING DAMAGE TO COWLING. THIS ACFT MODIFIED AT RAM IN WACO, TX TO 335 HP UNDER RAM STC SE4327SW. TIME SINCE STC: 166.6 HOURS.