It puzzles me why it should be considered unacceptable, by some, to make a constructive criticism of anyones work. It’s how we all learn to improve by input from others. The OP is described as a superb model engineer so surely he would be interested in knowing how he can improve his own high standards. I thought Dave’s (SOD) comments were relevant and considered and who would disagree with his view that ” minor anachronisms stand out in a first class job.”
To me it’s redolent of those who criticise model engineers who are trying to create a first class model by using the disparaging term “rivet counters”. What’s wrong with trying to get things right and helping others to do so? Or are you advocating a counsel of mediocrity?
In Proverbs it states, and I use this in an historic sense rather than any religious aspect……
“Give instruction to a wise man and he will be yet wiser.” This same comment was made in the earlier rendition of the “Teach Yourself” books.
To be fair to the OP He does take on board some of the comments, would he have done so without Dave’s remarks.