What was found
FIRST 1/3 OF THE MAIN DOOR HANDLE FROM INSIDE COMES DOWN SMOOTHLY, REST FEELS STUCK AND IS HARD TO PULL DOWN. (NO ISSUES FROM OUTSIDE OF THE AIRCRAFT) PERFORMED MAIN CABIN DOOR OPERATIONAL TEST AND WAS ABLE TO DUPLICATE THE REPORTED CONDITION. NOTED ALL DOOR LOCKING PINS WERE DRY AND REQUIRED LUBRICATION. LUBRICATED MAIN CABIN DOOR LOCKING PINS AND PERFORMED MULTIPLE OPERATIONAL CHECKS. OPERATIONAL CHECKS GOOD. ALL WORK ACCOMPLISHED IN ACCORDANCE WITH AMM 52-10-00.