Huh. Weird that it would run the calibration but not be able to measure; the calibration routine is SOOO picky! Hmmm.
Make sure the two little windows on the bottom of the head are clean. Check the connections of the white cable, and make sure the contacts between the head and carriage plate are clean and the springy ones spring properly. Also eliminate any lighting from outside the machine that might be creating a glare on the material.
I’m not sure what you mean by “precision preview.” Can you post a screenshot of the alignment?
You might need to recalibrate more than once. You can cover the material with new paperwhite masking to keep from using too many new material sheets. As pointed out It gets picky but the result is worth it.
I have recalibrated 3 times now, when I try to focus (even if the point is in the middle of the board), the image has a margin on the right of approx 2 in and the bottom 1 in and says “failed to measure, the material may be to short or tall”
Did the calibration succeed? If it does you can put an x at the corner logos and score at 5% power and see if it is correct. It will usually do the same first and let you know, but it has to run until it finishes both the marking and the calibrating. And the calibrating may take a couple of hours that you have to leave it alone to do its thing.
Do you do your placement before or after you do the set focus? If you use the set focus (even several times to make sure) and then place your piece by moving your image to where you want it, do another set focus for good luck make sure your placement is what you want, and only then cut.
It took me over an hour to rotate the piece by nudges before I cut but this was the result on the outside…