Quarter glass regulator
The quarter window repair info is scetchy at best in service manuals. I dont have a "how to" but a tip or hint ... The quarter window regulaters of convertibles will drop right in when the top is down. That suggests you roof line is in the way. There is a roller track on the inside of the inner panel that is hard to see. When you lean the regulater out away from the roof line you are aiming right for that track. It has to go.
Alignment with the door glass on a no post is a challenge too. My mistake was addressing the quarter glass issue first then rebuilding the door hindges a month later. I need to go back in and realign that quarter glass, someday.