Two things that you may have to deal with (I have a Ic Color, which is a newer model): the wiring may be old and brittle, needing replacement (not hard if you’re handy), and the baseboard may not actually be flat — over the decades, with the baseboard being supported at the four corners, it’s possible for it to get a bit cupped and un-flat. I suggest you take a long straight edge and put it both directions on the baseboard and see if you can see a gap under the straight edge. I do on mine, so I’m thinking of replacing the old baseboard with one made of marble or Corian or something similiar. However, that would mean no longer being able to use the proprietary Leitz mechanism built into the baseboard that allows you to lock down a Leitz paper easel, if you’re using one. As yours appears to be an early version and your photos don’t show the entire baseboard, it may be that yours doesn’t have this system.
Hey, my comments may make it sound like I’m down on the Focomat. Far from it, it’s a very precise piece of equipment. I just wanted to share a couple of issues I’ve had to deal with - YMMV.