Hi Ken, I should have been more clear. The focuser software on screen reports it in mm. But the main problem seems to be that SGPro says move to 1185. The focuser moves to 1185, then watching the output onscreen it moves to 1184, then 1185, then back again, so the AF routine fails, although about 50% of the time it will start an exposure when the focuser is briefly in the right spot. I noticed the ASA autofocus software has a tolerance built in of a couple of microns and puts up with this behavior.
I'll ask the ASA guys to sort out their focuser too, but I don't expect a very rapid response.