This is one of the vagaries of the game... After receiving a new gun, and / or changing your existing gun, it is always prudent upon exiting the home port, and outside of the green circle, to Save the game, exit, re-start the game, and then Load that Save. You should then be able to put the crew at their stations on both guns, and when issuing "Battle Stations, guns", be able to "see" the crews at their stations. If not, let me know. Also, when you post back, tell me more about your Balao boat:
1. When and how did you get the boat? ie: "upgrade", new career, etc.
2. What was the date you acquired the boat?
3. Any other issues, such as patrol assignments, etc., other than the guns?
4. Are the radars functioning properly at this time, during the gun issues?
5. How did you get the gun(s)? The 40mm is an automatic "upgrade", whereas the dual 5" should be a purposeful skipper choice.
6. Were there any crew slots on the crew page for the guns?
7. Did you go back and forth on the pages, trying to "force" the game to properly display?
Thanks