Many thanks for the additional images and information, Charlie. If Wayne runs out of tanks to model, the possibilities for trucks, tractors, and artillery are nearly endless.
Tim - With regard to the last image at your first post (the one with the gun at sort of half-cock):
http://www.papermodelers.com/forum/612854-post1.html Did you build the model with movable trails and a sliding barrel? Or did you build two models?
Don