I am restoring my wings. I am replacing the old hard rubber seals with newer
ones (1980). They still have flex and stretch to them but have shrunk to the
point of interfering with the window closing. I want to stretch them to fill
the frame and glue into place. I tried this technique with the windshield
using a rubber adhesive. It eventually pulled away. I'm thinking crazy glue in
the corners with rubber adhesive the rest of the way. Any suggestions or
comments.

Not sure what adhesive you tried, but 3M makes a rubber/plastic/emblem adhesive that works well.

That said I opted just to replace the wing seals. The new ones available never seem to fit according to multiple posts,
so I picked up good used ones from http://www.auto-italia.com. They fit perfectly and didn't cost much either.