Alex, thanks for another excellent update with info, photos, and videos, as well as future development.
Question: how did you physically make the cuts for the lift bridge--at both ends. I saw and heard about hot gluing and many track screws; but, how did you make the cuts? I ask, in part, because the rail gaps/kerfs at the open end of the lift bridge seem to be quite small.
Thanks, again, for a fine update.