I just received a email from the boards designer that a .1uF cap was ok though he said this was a rare issue with his users. It did happen but rarely. I did add some features to my enclosure like variable speed spindle control and such. This might cause some of the interference but it didnt have an effect when I pulled the fuse. I am trying for a zero debounce, correct? I did pick up the bigger caps, so I will know more tonight. The z axis is the only one I am dealling with at the moment, under "ports and pins" input, should all 3, Z++, Z-- & Z home be enabled? I would think so but I am not sure.