OK... I did manage to break it... Same exact scenario. Start at Pearl on a Narwhal, after 3 patrols, upgraded to a Tambor. Transferred to Midway. Moved my deck gun. Did 3 more patrols, and was upgraded to a Gato. Did 3 more patrols, and March 20, 1943, upgraded (early) to a Balao, and lo and behold, no deck gun. However, this is NOT an FotRSU issue. I am almost certain we could induce it in TMO, and possibly in Stock, depending upon what the actual cause is, as mentioned, whether the moving of the deck gun on the Tambor, or the use of the Narwhal, or maybe that combination. Either way though, it is possible to get things back, though it definitely involves more than just the "AdditionalRepository" in the crew member slots. I will attempt to re-create this another way, and have a write-up, hopefully by tomorrow, on what to additionally edit in the upc file in the Save folder. It is based upon Coletrain's solution, but is more involved. More later.
