Update: The misaligned latch seemed not to be installed incorrectly after all. It seems to just have been improperly latched at the factory, causing that part of the lid to take a set and stay sprung outward. After the case was open for a while, it seemed to slowly start springing back. I helped it out by applying a clamp overnight to spring it inward. Now the latch (drawbolt actually) lines up just fine again. I'm keeping the case. It's actually a pretty good budget imitation of a vintage Geib case