John... I didn't mean to exclude the servo machines intentionally. That said, I had a good chance to look over the control box for the stepper machines when I was pinch hitting for Michael Mezalick teaching a couple classes at AXIOM HQ. I did not do the same for the Elite, but am sure they take step & direction input, so other than wire length, possibly no difference.
Email me a couple pics of the controller layout, full hi rez if you can. My email is in my signature.