I had my SPF GT40 in a parade yesterday. No hands touched it, except mine. The passenger door now is misaligned. I loosened most of the hinge nuts, and I can get the door to close but it won’t latch. How do the latches work? Clearly there is a spring, the outside handle and inside cable pull something but I can’t for the life of me figure out what the mechanism is, and/or how it works. Many thanks in advance. Attached pic of door closed but not latched.