As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, LT TORQUE WAS OBSERVED DECREASING. POWER LEVER WAS ADVANCED AND CHARTED TORQUE VALVE COULD NOT BE REACHED AT ALTITUDE 5,000 MSL MAXIMUM OF 80 PERCENT TORQUE BE ATTAINED ON LT ENGINE TROUBLESHOT FOUND FUEL CONTROL LEAKING INTERNALLY, REPLACED FUEL CONTROL. (K)