Window Rubber Install: Push or Pull?

Working on some felt/rubber pieces ('65 Formula S) that need to slide on the metal frame somehow. Starting at one end using soapy water I can pull it on by hand only a few inches with a long way to go. Afraid of using pliers to help it along because for sure the rubber will end up ripping. Tried to press it into to channel but it won't catch, pops out over and over again. How does one install these rubbery finicky things anyway? Thank you.

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Author: admin