Jack it up a little at a time it is easier to lift a little more than it is to lower it to the right heigth if you go too far.
How to adjust door glass 1970 mustang.
You can do it several ways.
The regulator where it mounts to the window bracket on the left side in the pic has a slot that allows the window to be adjusted forward or rearward.
Mine are all new 70 glas.
Replace the glue in glass with 70 type bolt in glass.
Usually the door will be low and not high in the rear.
First try to lift up using your hands.
Keep in mind that a little adjustment at each point makes a huge difference so adjust in small increments.
My window wont slide easy i.
My drivers side window has been really hard to turn up and down.
Hey guys have a 69 mustang with the 70 bolt in glass.
This what we mean by loose glass in the doors of a 69 mustang.
It is easier to install then the factory 69 bond in.
Are you trying to adjust the window fitment.
This bolt is in an oblong hole in the door.
Took out the regulater and it seems to work good.
If this does not move it enough use a floor jack but put a 2x4 between the jack and your door edge to spread the load.
Just those 3 bolts and 1 nut do all the adjustments you need.
I found this pic on line that may help explain my problem.
The best way to solve the problem is to do exactly what ford did for 1970.
Is the back edge sticking out too much or in too much.
Did you ever think of going with the 1970 mustang bolt in setup.
It turns slightly hard one way which i think is where the spring tension is and easy the other way.
If the door is off just a tiny bit up or down at the rear you can lift or push down on the rear edge.
For you guys that are familiar with the door window adjustment.