A lot of the older windshield rubbers have a strip that gets tucked into a groove to create a wedge effect on the glass and body edge--sometimes this is like a separate rope that gets pulled out and sometimes it is just an formed edge that gets tucked into an receiving groove---looking very carefully you should be able to see it and if you do find it look for the end and pull it out at a 90 degree angle, then you can get the glass .