Oddly enough I am seeing it. I've been scares from this site lately, so jumping on here now is just funny timing.
I don't have a video anymore and in fact I need to do this again.
When you remove the rubber accordion boots to work on this, go ahead and then press the sunroof button to VENT position and watch the movement of the front glass panel on the plastic rails. This now puts the glass higher up the rail and on a place where there is no wiggle anymore. SO you have to cut thin strips of electric tape and run it over the place of the rails where the glass panel NORMALLY sits in closed position. You are removing the slack/gap that is usually there. It can be fiddly to work on but be patient and don't cut yourself. The tape can only be 2 layers thick at most OE else you trigger the pressure sensor on the glass and the sheets of glass never close.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S