No adjustment that i know of. The track on the buttom of the window may have fallen out of the regulator rollers. Take panel off and slowly roll up window until you can see and feel the rollers in the track. 1 track is on door and another fastened to buttom of glass. Otherwise the regulator gear may be skipping a tooth or 2. Not hard to investigate without having to dismantle everything. Let me know what you see. I may have bits and pieces you could have.


~ HB
1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery
1962 Chevrolet C10
1962 Suburban