I thought that I had tried that (it's obvious that there are initial settings and I did look for and find where they were set) but it didn't work. So, probably user error rather than user ignorance in this case! I'll have another look - thanks. It's only a nark, hardly a show-stopper, and less important than not being able to dual-axis home with my IP/M. But I used one of those with my eyes open and I can work round that easily enough. Mach3 works well enough for me but there are always odd items where you think, "I wouldn't have done it quite like that!"