Gunslinger - New Board Additions to Mod?

Howdy Gents,

Tried to contact the maintainer of the Gunslinger mod. Got a Mail Delivery System Failure notice saying that e-mail address no longer existed. Being that only one person is the maintainer of that mod, I’m opening this up to anyone who might be able to help.

Can anyone tell me how to open up an old module and add new boards to it? Are there any criteria for such things such as size?

Tom Cundiff