This client's lock is a mortise cylinder commercial grade lock which was held in by a set screw. The set screw was old and rusted out and broke when an employee put the wrong key in and turned the lock a little too hard putting stress on the screw which held the lock inside the door. Our client called QLP Locksmith San Diego and we sent a technician out who assessed that only the set screw needed to be replaced. The tech replaced the screw and re-installed the lock. Now the lock is working perfectly and the client didn't have to spend a lot more money replacing the entire lock cylinder. If you are having problems with your commercial locks, call QLP Locksmith San Diego for Fast & Affordable locksmith services 24/7 in San Diego! Call (858) 231-0248 or visit https://quicklock-pick.com/online-service to set up locksmith service today!