The IT manual is not as good as the Ford reproduction manual here on details but the IT manuals shows you how to do the adjustments without the factory tooling.
I think that YT sells the IT manuals but you would need to call them to make sure. I only found the Ford factory reprints on line. I know many of YT parts are from Tisco and Tisco used to sell the IT service manuals.
I personally like to have both manuals. The Factory reprints go into great detail but may only refer to some special tool to do something. Where the IT manual many times will show you how to do the same thing with common tools or how to make a setting tool.