2004 S60 passenger window twists when it goes down more than a few inches (twists means back part of window goes down more than front). It goes back up just fine.

To find the problem I removed the door panel (thanks to youTube link from Klaus) but am not sure where to go. I figure I pull off the foam stuff to get at the window but want to be sure first so I don't tear something up.

In the meantime, clues to the problem:
Door has always had a rattle in it. With door panel removed and looking in the top I can see part of the window mechanism resting against the window, and a clip on this piece that is just flopping around. Both of these could rattle and it doesn't seem like this is how it should be. The photos show these things, especially the 3rd which has notes and arrows.


So, questions:
1. Do I just pull off that black foam to get at window?
2. Should this window arm thing be resting on the glass, and should that clip thing
3. Is there known reason for window to twist that I should look for?

Pictures to door are linked here.

Thanks for your help,