I just acquired one of the early Century View Cameras, and the rail has me baffled. It has a set of gears on top, and underneath. On the bottom is also a brass rail, much like some of the later ones standards rode on. But the front and rear standard will not ride in the grooves properly for the gearing to work from the bottom set. I have attached a pair of pic. One of the top side, and one of the bottom side. Any idea???? Or where I might find out why? Or is this just one of those things that you accept, and go on?