My skew measurements came out similar to yours:
The one person who had replied to that thread had given me reasons as to why I couldn’t hope for better, and to leave it alone, but now, after reading some of the comments here, I’m starting to think that improvement might be possible after all.
All of which raises a worthwhile question: just how good can we realistically aim for, and at what point can we do no better and should just leave it alone?
At least to me, the CaliLantern required a fairly large number of tedious measurements. It’s not something I would want to do very often.