1940 Dodge Door Lock

[40phil41]

A simple question for the 40/41 Dodge and Plymouth owners. How far does your front pass. side door lock key turn before the key can be removed? I have just changed out the door lock (and also the latch assembly) on my '40 Dodge. I put the key in, turn it 1/2 turn (CW) and the door locks but the key will not release and it will not turn any further. The lock tumbler itself requires a full turn to release the key. The lock on the original latch assembly that I removed also will only turn 1/2 turn. I would normally check my '41 but it is still away in winter storage (and based on the amount of snow outside this is a good thing!). The part number is different for the 42-47 door lock so it is possible that I have the wrong lock for my '40 or maybe I have assembled something wrong? Any lock experts out there?

 

Phil