As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3387 THE FLIGHT ATTENDANT REPORTED THE MAIN DOOR WAS HARD TO OPEN. THE AIRCRAFT WAS REMOVED FROM SERVICE. CLEANED AND LUBED MAIN DOOR ROLLERS PIN IAW AMM 53-21-02. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.