When you mate the front and back of the lock together insure the bolt is in the *locked* (out) position and the knob is pointing directly down. This will cause the notch the tailpiece fits into to be in a vertical position.
When you mate the front and back of the lock together insure the bolt is in the *locked* (out) position and the knob is pointing directly down. This will cause the notch the tailpiece fits into to be in a vertical position.