Driver's window glass falling off track

[fusion]

I am putting the glass back in my 1976 280z after a restoration. I have the front and rear windshields installed and now I am starting with the driver's glass.  

 

I am able to get the glass inside the door and all the guides installed with the wheels in the channels. The 2 glass door bumpers are also installed. The glass seems to roll up and down reasonably. I do not have the window frame installed yet.

 

Where I am getting hung up is that when I roll the window all the way down so the bottom of the door glass frame touches the rubber bumper at the bottom of the door and then start to roll back up, the rearward roller jumps out of the back of the track that is on the door glass frame. 

 

Edit:  I cannot prevent the pictures from being upside down.  Weird.

 

Window rolled all the way down

 

 

 

 

Starting to roll back up

 

 

 

Roller jumped out of track

 

 

 

 

Door glass

 

 

 

I have tried adjusting the front glass guide and the rear regulator guide bolts that are on the inner door frame but other than trying to adjust the entire glass rearwards I'm not sure what to do. 

 

I was thinking that perhaps I need to install the window frame but didn't think that would help with the issue at the bottom of travel. 

 

Please let me know your comments.

Edited September 25 by fusion

[Miles]

" I do not have the window frame installed yet. "

 

Install the window frame and adjust as needed.  All frame bolts must be tight as they pull the frame into the correct geometry.

 

Here is a book that I used to to do two 240z restomods.  Gives details on how to disassemble, restore and reassemble a 240Z.  Lots of pictures with step by step instructions.

 

How to Restore Your Datsun  Z-Car

 

by Wick Humble

 

available on Amazon

Edited September 26 by Miles

[fusion]

Thanks Miles.  I do have that book, I will check it out and I'll install the window frame before adjusting the glass again