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Hi H,
Not that it helps much but I have the same (similar) problem. My Robofocus motor and controller are about 5 years old and I use them to focus Takumar 6x7 lenses. I use @Focus2 in TheSkyX and have noticed that 'focus point number' change every time I focus but, unlike yours, my number increases. I wonder if it might be something to do with the RF Controller Temperature Compensation function but I don't use it so haven't followed it up. You can change that 'focus point number' within the RF software - Get or Set Position and Get or Set Maximum Travel - to give a big enough number that it doesn't get to zero as a test.
My system isn't connected at the moment but I can set it up indoors to do some comparisons if you want.
Charles
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