I've searched/read the archives before posting...I just changed out one side of my '67. It is different from the '65-'66 in that on piece surrounds all 3 sides of the glass. Question: should I have used a sealer in the channel before installing the new seal? Also, the job was much easier than described in the archives. I didn't need to drill out or replace any rivits. The write-up I read must have been referring to the earlier models. Please advise on whether or not sealer is required. If I have to, I will try to remove the new seal without destroying it. Thanks...