The problem is the MB trans. manual isn't model specific. Its year specific. As in it covers for example the transmissions that they offered in all the models for a range of years. Its hard to find in book form and isn't in the CD Rom.
The books were origonally seperate ie. one for chassis/ one for engine/ one for body electrical etc. etc. all of the books were brought together in the CD Rom except the transmission manual.
Your best bet would be to take the year of your car and the trans. model# and find the trans. book. There are a lot of books out there you just have to look and wait till you find one. I have seen it before on ebay. Do a google for places that sell old MB manuals.
Hope that will help or at least explain why most people don't have the info to give you.