RigelB

Hope I am in the correct forum area for this as this is my first post but any advice would be welcome. I am struggling with Sesto senso v2 attached to the micro focusser of my Esprit 120mm refractor. I have the skywatcher field flattner, Starlight Xpress 7 position filter wheel and OAG, Starlight Xpress Trius 694mono attached so not that heavy. At any reasonable telescope angle e.g. 60 degrees the focus point in the software is anything but repeatable but the focus point on the draw tube is roughly the same. The electronic focusser is fitted correctly and calibrated. The focus holds no problem but one night focus is at say 93000 and another 47000. this is stopping me trying autofocus in SGPpro. So, I think the problem is the fact the Sesto senso attaches to the micro focusser and it is slipping. I have tensioned the micro focusser screw/untightened the self centering clamp on the Sesto a little. I can achieve focus with a bahtinov mask but I really want auto focus. Are there tensioner screws I should adjust on the skywatcher focusser? Is this never going to work without a better focusser e.g. a starlight instrument replacment focusser or the Primaluce Essato? Should I have gone with the Pegasus Focusser which attaches to the coarse focus knob?