The problem is, now I'm back home, and don't have the PDF here...
I visited the BMW garage today. The same guy helped me and looked, I need a new lever. Cost: 17 euro's
How to remove the roof from the frame is _quite_ simple.
On the outside you find two bolts, with 6 sides (don't know the english word..)
You can get them of with a NR. 17 (if that's used in the USA, that is..)
Then descrew the 2 black torq screw located more near the middle.
That would give you the possibility to remove the last half of your roof from the frame.
To unmount it completely you have to remove the clothing on the below of your sunroof (not the complete sky) and you'll find the last torq screw on the side, near the middle, on your left and right.
Descrew those and you can lift your sunroof out, and see the complete lifting frame etc. etc.