If someone tells you they cant do something they are a quitter.24 hour lockouts is no quitter. They picked my antique deadbolt open after so many failed. I could not have this lock drilled and that seemed to be the only solution all the other locksmiths could come up with. I felt like I was hosting a reenactment of the sorcerer and the stone. 24 hour lockouts were my knight in shining armor.