Greasing sunroof rails

[ahobgood]

I've read, I think, every post on the forum about this subject and am still confused.

I have a '95 E320. With the sunroof sompletely open there are, on each side of the sunroof, chrome covers that have 5 screws.

I took those off which I think exposed the slide rails. They are shaped sort of like this: _l l_ (couldn't figure out how to put a cap on the two vertical lines in this figure).

My question; do I grease just the outboard lower horizontal rail on each side?

Thanks.