Thanks for noting the issue on the Schematic. When I redrew this for the TAN, I was using one of the ones floating around the net and didnt catch that issue. I’ll fix it and repost it.

Usually, in the kit, I included a Parts List, the Schematic, the revised Layout, and the Addendum to the instructions in the book (correcting some mistakes). I found that building a kit without having a schematic to look at doesn’t help anyone learn. THe schematic is where you can really see the signal flow and how everything works.