What was found
THE MAIN CABIN DOOR HANDLE IS DIFFICULT TO MOVE TO THE CLOSED POSITION WHEN CLOSING THE CABIN DOOR FROM INSIDE. WHEN CLOSING THE DOOR ON THE PREVIOUS FLIGHT, WE RECEIVED AN AMBER CHECK DOORS CAS MESSAGE. FOLLOWED THE CHECKLIST RESET PROCEDURE AND THIS CLEARED THE MESSAGE, BUT DOOR HANDLE IS STILL VERY DIFFICULT TO CLOSE. CHKD ADJUSTMENT OF MAIN CABIN DOOR RUB BLOCKS. NO DEFECTS NOTED. CHECKED ADJUSTMENT OF DOOR STOPS. FOUND FWD STOP HITTING CONTACT PLATE ON DOOR STEP WHEN DOOR FULLY CLOSED, ADJUSTED FWD DOOR STOP IAW AMM 52-10-16. PERFORMED MULTIPLE OPS CHECKS OF MAIN CABIN DOOR. NO DEFECTS NOTED AT THIS TIME. REF AMM 52-10-00.