DotTune not working for me. Suggestions?

Using Live View with your system or my system is the same, therefore with my system if the focus test does not move to any direction it is a positive indicator that you are at the best focus calibration that one can obtain with any camera/ lens combination. People can try and use what is best for them. This is only my contribution based on my personal tests including comparing with your proposed system and my system working very well with all my lenses. Again, that is why we have vanilla and chocolate ice cream. Regards: Oscar