As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE ATTEMPTING TO REMOVE THE PROP OFF THE START LOCKS, THE PILOT FOUND THE LEFT ENGINE POWER LEVER DIFFICULT TO MOVE. EFFORT TO MOVE THE CONTROL RESULTED IN AN ENGINE OVERSPEED AND THE ENGINE WAS SHUT DOWN BY PULLING THE STOP AND FEATHER CONTROL. INSPECTION FOUND THE POWER LEVER BALL JOINT, WHICH IS MOUNTED IN THE ENGINE CONTROL CONSOL, WAS BENT AND BROKEN.