As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4468 THE CREW REPORTED THE MAIN CABIN DOOR WAS HARD TO OPEN/ CLOSE. THE AIRCRAFT WAS REMOVED FROM SERVICE. CLEANED AND LUBRICATED MAIN CABIN DOOR ROLLERS IAW EMB 135 AMM # 52-00-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.