What was found
WHEN CLIMBING OUT FROM A HELIPAD TO A HIGH HOVER AT HIGH POWER SETTINGS, THE #1 ENGINE DROPPED OFFLINE CAUSING A LARGE TORQUE SPLIT WITH THE #2 ENGINE GOING UP TO MAX OEI TORQUE FOR ABOUT 10 SECONDS WHILE THE PILOT LANDED. THE #1 ENGINE DID NOT RESPOND TO TRIM INPUTS ATTEMPTING TO MATCH THE TORQUES DURING THIS EVENT. THE AIRCRAFT WAS LANDED WITHOUT INCIDENT AND MAINTENANCE WAS CALLED. THE MECHANIC FOUND A DISPLACED PIN AND ROLLER IN THE P2 CHAMBER OF THE #1 FUEL CONTROL. THE FUEL CONTROL WAS CHANGED AND THE AIRCRAFT RETURNED TO SERVICE AFTER VARTOMS ADJUSTMENTS TO THE NEW FUEL CONTROL.