As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED THAT THE RT ENGINE WAS NOT MAKING AS MUCH TORQUE AT ALTITUDE AS LT ENGINE. MAINTENANCE DISCOVERED A FAULTY BLEED VALVE, THE VALVE WAS REPLACED WITH AN O/H UNIT AND THE ENGINE WAS GROUND FUNCTION CHECKED SERVICEABLE.