Hi Charlie,
I had a question about your Marx switches since I'm not familiar with them. One the first page of this topic, you mentioned about inserting a nail/pin in the center rail section. I was wondering, when the switch moves doesn't that pin prevent the opening/closing of the switch or does the rail bend around the nail/pin to accommodate the pin being there? That's what it looks like is going on here, but maybe a video would show it better?
Tom