Thanks N1 vibes,
In this case the aircraft experianced a torque mismatch as it started a climb and was unable to correct, pilot then landed on.
torque reading for No1 were low, approx 40%
and torque for No2 was high, approx 90%, with a slightly lower T6/Nh than normal.
the aircrew didnt have enough adjustment to bring to the number 2 down.