I think what happened is that we were trying to set the baud rate to work with the Mac and used a Marlin version I had laying around on my desktop. I can’t remember where it came from. (sloppy, I know) Had other things going on as well that were distracting.
From here we’re going to make sure Marlin is all setup correctly before anything else.
We defined a large work area in Repetier and it had no effect on the ability to move more than 200 in any direction.