The part about how to separate the wing mechanism knob cover from the knob is not correct. You should NEVER use an Xacto knife to do this because you will mess up the cover.

The "real" method is that there is a hole in the BACK of the knob (the side facing the door panel). You need to make a "U" shape out of the end of a coat hanger. Then use an inspection mirror to find the hole. Once you find the hole, put the "U" tool into it, pull toward you, and the cover pops right out.

Catrinus
73 280C

By the way, there is a guy named Kent Bergsma (Mercedes Source) up in Bellingham, WA who publishes little "how to" books like this for various jobs on vintage MBs. They're not bad, but they're not complete, either (for example, I bought the one for repairing doors and his book didn't mention the above trick). Check them out at
http://www.**************.com/
and then click on "repair manuals".