1987 GMC P-Series Window Components

I ordered these glass channels for my 1987 Chevy Astro. Well...they hold the glass in place, but that's about it. They are shorter than OEM channels so do not hold the glass as well when window is down and they also lack the profile of originals (edge trim) so now there is a large blank area both inside and out. Overall I would say "No Bueno"...but at least the glass rattle is gone!