Autofocus - first point out-of-line with others

I've made good progress with autofocus - I was expecting it to be difficult given that it is a C11 with Starizona Feathertouch on main focus knob. However, often the first (and sometimes second) point is not in line with the other points on that side of the V. Looking for input from other users with similar equipment for ideas on how to address. Or perhaps this is as good as I should expect?

Capture_autofocus1.PNG1264x874 716 KB

Here are my settings:

Thanks in advance for any suggestions.

Dave NL