Hi Rob. Regarding the clicking issue we talked about 4 months ago (sorry it took so long, I started an youtube channel which required so much more work than I imagined, and used the cnc very little since July).
here is a link with the problem as it happens up to this day: https://www.youtube.com/watch?v=chFWGLZtExQ
It does not bother me much as it goes away after pressing reset a few times in mach 3, and the cnc works just fine.

I have a new project in mind, a lot smaller, and not sure if here is the place to start a new topic. It includes steppers/servos, drivers, receiver, remotes etc, arduino components I guess, but it is a small robot (like a toy thing) and not a cnc. Is this (mycncuk.com) the place for such a topic, or should I search for a robotics forum?