I recently purchased an entire reproduction weatherstrip kit from CJ Pony Parts for my '66 fastback. As I was installing the roofrail weatherstrip, I noticed that it had two small metal retaining strips at the front of each weatherstrip. The kit also came with two small stainless screws. However, I don't remember the original Ford weatherstrip having these retainer strips; it simply glued into the stainless weatherstrip channel, and the front ends glued into place, at least from what I remember. Also, I don't have any holes for these stainless screws, nor do I think they were ever there originally--at least, I know we didn't accidentally fill these holes during bodywork.
What am I missing? Is my weatherstrip incorrect, or is my memory playing tricks on me? Of course, my original weatherstrip was tossed in the trash several months ago. Was this perhaps a mid-year change (my car was built in December 1965).