I run mine a quarter turn loose. That's the way the car likes it at the track and it rides good like that. Any tighter and the ride gets rough.

Calvert used to give you a pair of their wrenches if you asked for them when you ordered their stuff. Don't expect much wrench, but if you need preload at the track and don't like the ride, they make it handy to make the change in settings.

I use a piece of masking tape near the nut that I number each flat on. That way, after I get the set-up that I like I can make changes and not get confused if I need to go back.

Be sure and get the 9 way shocks. You may not need all the adjustments, but it's better to have them and not need them than to need them and not have them. My Cuda needs the stiffest setting at the track. But I run them softest on the street. The shock settings are the only change I make going from street to strip. And the car will consistently 60' in the low 1.5s.

You can get left over 9 way Ranchos from a guy on Ebag for around $75 each.