No, I don't use "set half travel position" My focus point is around position 3000.
I just focused roughly by hand, the focus position counter was around 3000 then, after that I used autofocus. (FocusMax4 under Windows).
That starts from focus and then moves the focuser outward and inward and measures the diameter of the out of focus star image.
Only very little movement is needed.

And I don't use Backlash as well, I use a 200 step motor directly on the fine focus knob of my Crayford style focuser, assuming there would be no backlash that way, and that has always worked for me.
But you would just add the backlash steps to the number of steps when changing direction I guess.

Regards,
Albert

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