If the lock sticks - it must be urgently changed, I think so. It is stupid to give money for repairs so that sooner or later it will again give you an unpleasant surprise. I think you should contact locksmith ontario services . Last week, a locksmith from this office was fixing the lock on my mom's car. She was delighted. She says that she has never seen such a pleasant man with skillful hands. I think that loneliness just speaks in my mother, but the castle was really done perfectly.