Having broken the key off in the front door lock, I removed the locking mechanism and visited Allied Safe & Lock Co. in Falls Church, VA. They promptly removed the broken part of the key, cut a new key, lubricated the locking mechanism, and checked it all out. I was in and out of the door in minutes, with a completely repaired and fully operational lock. As the same key is used for other doors, it was important that all this work seamlessly ... and it did. I give Allied high marks for their friendly and professional approach to personal lock-related problems.