Wow I've surprised myself... So far, I have actually created a 6" double turret file for the submarine through copying and modifying files. I have 6" double turret .dat .sim and .zon file, as well as I have added it to upgrade packs and I actually have a 6" double turret on my Gato in-game!!! Unfortunately, the deck gun station button is grayed out, and I cannot man it or fire it. Can anyone help with this?