I have discovered MUCH information buried in the CDs that I just got for the 123 chassis. It is the same for my 107 CD as well. There are a lot of PDF files that do not seem to be connected to any of the model/year selections from within the program itself.
The real problem is in navigating the info that IS there. In windows explorer, you will see subfolders with many PDF files – it seems that the beginning numbers of the file names correlate with particular systems, so you can narrow your search based upon that. Unfortunately, it only has the effect of reducing the amount of hay in the stack, but you’re still looking for the proverbial needle in that stack of hay.
Seek & ye shall find. (I hope)