I am sure you would find something if you did a search of PP.

I did when I repaired my sunroof, but I am away from home and don't have the guide I used which I printed. It was not for a 300D, but sunroofs of that vintage from MB for several models are similar.

WHunter posted these links:

http://www.peachparts.com/shopforum/diy-links-parts-category/313893-w126-sunroof-drains-repair-thread.html

__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5