Turns : Inches for torsion bar adjustment?
The factory manual tells you to take measurements at two places and the difference is the spec. I don't know the exact measurement points or the spec.
I just turned in the preload bolts until I liked the way it sat, bounced it up and down a couple of times to make sure and repeated it on the other side. Took it down to get it aligned. That was over 20 years ago.