[FluegelX1]

This plagued us for a year in my wife's 2019 X1. I found there was a noticeable difference in the gap between the glass and the roof in the front compared to the back. I though I would have to replace the seal but I came up with something else. I slid the front glass back and then loosened the 4 bolts that hold the back glass. You have to pull the rubber trim out of the way to see the bolts. Once loose, I moved the back portion of glass forward a little. Tightened it up and then closed the front glass. Then loosen the 6 bolts holding the front glass and moved it forward. ( before moving the front glass I could stick a credit card in the space between the glass and the seal) . Then tighten the 6 bolts once the front glass is in place. I did have to push down from outside to get the glass down far enough. It would be easier with 2 people but I managed myself. Drove it the next day and it was 100% better! I hope this helps someone!