Help with rear shocks and adjustment please Options

[Wyvern]

I have these shocks on my 73 1.7
They seem "ok" but just want to understand their adjustment.

From my research they are Koni "Reds"

Question 1 ... My car rides high (I think so)
Measuring the "donuts" as what I understand is the preferred method I am at 6 1/2" on the rear and 5 1/2 at the front.
Am I correct that the clip on the spring perch can be moved down to correct rear ride height ? ... then adjust the front torsion bars (yes ,,, then alignment)
I thought they had 5 grooves. Looks like (I am in 2nd from the top / highest.
What height should I be targeting ?

Question 2 ... I have found 3 different instructions on adjusting the compression / rebound . any help with the correct way and info ?

Thanks

[Luke M]

To adjust the koni shock you need to turn the little tab at the top of the shock.
Koni usually supplies a white knob for the adjustment or you can use your favorite adjustable wrench.
The shock spring perch should sit right on the red ring (black arrow) not that silver tube (yellow arrow).
The silver tube looks like an added section from the p/o for whatever reason.