I am trying to install a rear window in my 66 C10 with the large back glass. I took it to a body guy who also has a 66,small rear window. We tried for 2 hours, but just couldn't get it. He was surprised that the molding I bought was all in 1 piece and needed to be trimmed or cut to length which would leave a gap somewhere. He thought it should be pre-formed in a large oval. I then ordered one from Steele products and it is also just one long piece of molding. Are there any tips I can put to use, or is there a molding that is continuous that I should try to get? Thank You!