Just to flag up that i have a celestron c11 featertouch and microtouch primary mirror focus arrangement.
I have consistent problems when using the sgp in / out interface. This is what happens.
It seems to be if i set a coarse value greater than 100 - when i use this, sometimes the focuser just runs away. Nothing except removal of power cam stop it. When i reinstate power to it, it continues to runaway. Sometimes it is just stuck following power reinstatement.
More recently i set a coarse value and used it a few times, then it just jammed and would not move at all using any sgp commands.
If i press the physical buttons on the microtouch it is fine and the microtouch display shows the focus position changing. This is how i have been focusing.
Perhaps this is a bug? Happy to work with you if you need more info, i guess it is something i can experiment with without the need for stars.