Blazer Door Glass Weatherstrip Problem

[DANL]

Something isn't correct with the door glass to top weatherstip on my 72 K5 with double wall top. The weatherstrip doesn't fit corectly and the window, when rolled up, doesn't seal against the weatherstrip. Weatherstrip is new but appears to be to short. I just order new weatherstrip, but is the same as currently installed.

I need help and would appreciate any advice or photos.

Thanks in advance.

...Dan