i just looked at my removed roof rail weatherstriping stainless, the backside(to the car) has the foam tape. When i took it off, very little needed to be cleaned off the car, 95% was still on the stainless. Thats why i was just going to clean the edges a little neater than factory and use some eastwood seam sealer when i put it back on. It looks like most of the glue( which there wasnt much used) pulled off with the weatherstripping when i pulled it out of the channel of the stainless. This was original stuff, i was the first to touch it. Dearborn 10-20-69. The glue in the channel is more black in appearance. As opposed to the yellowish glue on the door weatherstrip. I still havent done the drivers side which i was gonna do in the spring. I will take a closer look at the drivers side Friday when im off for the weekend. it again hasnt been touched since the factory did it when it was born, just to reassure myself. Dont remember any double sided tape though in between weatherstrip and stainless.