Hey there! I recently faced a similar issue with my old truck's windows. It's awesome that you've been putting in the work to restore your 1950 Chevy 3100 — sounds like a fantastic project! From what I understand, your windows are stopping just shy of fitting into the top of the channel. It seems like you've tried adjusting the regulators and the screws, but still no luck. Have you considered checking the window stops? Sometimes, they might need to be adjusted or replaced to allow the window to go up all the way. It's also worth looking at whether the window channels are installed correctly. Oh, speaking of windows, I got some great window sunshades for my car at
https://snapshades.com/ Good luck with your restoration! Keep us updated on your progress.
