@roadriverrail :blobcatheart: Thank you! And don't hesitate to give a feedback (public or PM here, as you want) about the print quality.
The service I use is 'print on demand', so they use the same file for printing as when I submitted it years ago and checked, and I hope their process is still the same. They are literally printing the books one by one.
You can quickly browse all the efforts I had to do to make a file without using any proprietary software: https://www.davidrevoy.com/article757/the-english-book-printed-project-production-report-3