when i replaced the real glass seal last summer i saw that the headliner was tucked under the seal and held in there....i had to make sure that the headliner was back up under the seal and pressed into locked possition to insure that the headliner was tight....the first time putting the seal in the headliner moved/came loose, we had to take the glass out again, RETAPE the headliner to the sill, then put the glass back in.

just some info
Jake