Roof rail installation ?

I got all my rubber from Steele Rubber. I called them today and I am sending them back for inspection. They make some of their own parts but not all of them. These roof rail gaskets they make. The bottom of these are held in place with plastic push pins, the front end next to the windshield is held by a screw. But as much as I had to stretch these you would have have to use a strong adhesive like the stuff ??? you put the trunk gasket on with. (memory sucks) Then I'm not sure if it wouldn't just pull the thing in two like it started doing until it ripped off the push pins. Guess I'l have to wait and see what they say. The part number I have is for a 70-72, the part number changes in 73-76 uses a different one and no there are no instuctions that come with them.