I get that it's much easier to code=cut a key on the FB200 by using a spacing key, cut to all one-depths. Then you pop the spacing key in the right-hand jaw, the blank in the left, pick the pace you want to cut, set the depth with the depth-micrometer, and cut away. In fact, with a spacing key, the FB is easier to code-cut a key than my Framon!
With that said, I still don't see how the FB would cut a key by code using the spacing micrometer. How do you use the right-side jaw? Obviously, you can't put a key blank in the right-hand jaw AND use the spacing micrometer, because the head of the key will hit the micrometer.
I feel silly asking the question. I've been a locksmith for nearly ten years, and I don't get how to use the simplest/cheapest machine in the world!

TIA!