Most of you probably know about this place already, but for the few who haven't found it yet....
This link will take you to a page where you can download documents (more or less) specific to your coach model.
https://www.thormotorcoach.com/owner-resource/
All you have to do is register with your chassis VIN number. In theory, all the available documents are supposed to apply to your vehicle, but I found many that were quite general.