One piece windows question

[stingray72]

I've got 1 piece windows in my 70 C-10. The passengers side window is really difficult to roll both up and down. I'm goign to take the panel off this weekend and see what I'm going to need to fix this.

I guess all I'm looking for is some tips because now that this is my daily driver I don't like to have it taken apart for too long.

Does anyone know of a diagram anywhere of how the whole mechanism works? That would be great