Great advise on the NOS door latches. I bought reproduction door latches for the drivers door on my '55 1st series. I bought one and had problems. Sent the first one back and bought a second one. Had the same problem with both latches. The door latch worked fine on the outside. Had problems on the inside. Door did not open using the inside handle. I found a NOS latch on eBay. Got the NOS latch and installed it. The door latch works great on the inside and outside.
Larry