Thanks. I actually did slide the "doors" apart this morning, and that solved my problem. It kind of seems like design overkill on Mercedes' part, but I'm sure there must be a good reason to make something simple more complicated.

Thank you for your response. This is the first time I have tried this site. It is excellent!! I just bought this car a few months ago so am learning more about it each day. I WILL have more questions.
Thanks again.
Barry