I think that focus attempt failed because there was not sufficient outward travel distance. The camera had to be pulled out by 10 - 20 mm to achieve focus. Subsequent attempts were able to find the best focus but the tolerance was set to 1%. After failing to meet that limit several times, it began to search too far out of focus.

Based on the recommendations in the thread recommended above, I will try setting exposure time to 5 seconds, max initial step to 25 and tolerance to 5%. I expect it to work well with those changes.

Ed

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