As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THE MAIN PASSENGER DOOR RAILING PIN ON LATCH SIDE OF DOOR WAS VERY DIFFICULT TO REMOVE. DOOR WAS DIFFICULT TO OPERATE. THE ACFT WAS REMOVED FROM SERVICE. CLEANED AND LUBED RAILING PINS ON MAIN CABIN DOOR RAILING. NO FURTHER DEFECTS NOTED. THE ACFT WAS RETURNED TO SERVICE.