Is it OK to move an axis with a hand wheel? I mean when I will set a zero at a material heights, so as not to hit the surface to hard with jogging only? Also, I'm setting up my home/limit switches and I've got the Y axis working, but the X doesn't register. And, while it's in the X mode, if I should put my arm across the table it triggers the Y LED. Any thoughts on that situation. Should I be using shielded wire instead of solid ribbon wire? Are the limits set up one by one with a restart between each settings?