[dipso]

It doesn't droop as long as it is connected to the torsion bar. Once it is off the torsion bar it will fall to the ground.
You want to pull it off the bar, the, bar may come out of the Transmission side with it. If it does, just put it back together at your new height and you will be fine.

Remember the Torsion bar at the transmission side has different notch sizing than the end at the spring plate. Sometimes to get the exact height you want you have to rotate the bar 1 notch and then the spring plate 1 notch.
That will give you a split height vs just moving the spring plate side 2 notches.

I don't use an angle finder. I use a tape measure.
Measure the distance from the tip of the spring plate to the ground once everything is disconnected from it. Lets say it is 8". If you want to lower your car 1", reassemble everything so the tip is at 9".
It's a lot simpler that way.
If you want to raise it 1", reassemble at 7''.

It won't be exactly in 1" increments, but you will see how it works with a combination of rotating the torsion bar and the spring plate.