I've got a '95 M3 that I was putting a stereo in. I disconnected the battery while the windows were down, and after finishing the install, I tried to roll them up. They only move about 1/16" up or down, but that's it. And they do not move when I shut the doors, as they would if they were rolled up. I was just wondering if anyone has encountered this problem before and if they have any advice.