As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN THE AIRCRAFT TOOK THE ACTIVE RUNWAY, THE CREW ADVANCED THE POWER LEVERS FOR TAKEOFF. THE LEFT POWER LEVER WOULD NOT ADVANCE PAST THE FLIGHT IDLE DETENT. THE AIRCRAFT RETURNED TO THE GATE. OUTSTATION MAINTENANCE INSPECTED AND LUBED THE LEFT POWER LEVER RELEASE AND LOCK SYSTEM. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.