I don't understand the hatch lock parts I have. The lock without the key has 3 flanges for 3 notches that are on the early Z's. ( 3 notches on the hatch door ). The lock with the key has 4 flanges. I see that they have a 4 flange lock at the Zstore. They say that early Z's will need mods so the 4 flange lock will fit the early 3 notch hatch. Having said that, will the lock with the key work on my 71 if I cut another notch in the hatch. Also, am I missing something on the lock without the key ? ( 71, 3 flange lock ) Thank you very much.

The one without the key in it is a door lock, not a hatch lock.

Thanks. I have shaved door handles, I guess that's why I didn't notice.

And it is indeed missing something on the end - the lever that connects to and actuates the rod.