I know what you mean...you may have to pull the other side door panel to see how it all goes together...ugh!
I seem to remember that you need to pull the outside door side molding and tighten that bolt with an E-torx. You have to roll the window half way down to see where it attaches and get access to it via one of the openings under the trim- if it is the one I am thinking of- that way you can access stack-up from inside and outside the door. Good luck!