Ok did a lot of testing last night installing and uninstalling mods and files to try to track down where the issue was. As far as I can tell it was due to running an updated version of module manager 2.2.0 which was provided with a different mod I am using. When I put in the 2.1.5 version that you are using with this mod the problem went away and I am no longer getting a duplicate kerbal inside the ship when I go EVA. I hope this helps with fixing the problem and maybe gives a bit more direction. I am going to run with the 2.1.5 version to see it it gives me any issues with my game because I really love the models that you have and they do look so useful especially when using FAR where aerodynamics matter. Keep up the great mods and I am looking forward to getting my hands on those new TAC parts