Preload just touching the pin - go about 55 seconds in (1.444 60 ft)
http://www.youtube.com/watch?v=bofRAgenYrc&feature=plcp

This is with a .085 gap - go about 1:00 in (1.397 60 ft)
http://www.youtube.com/watch?v=SUL044AbhvQ&feature=plcp

The mono's have helped tremendously with the body separation. The separation is so bad with the 6 cylinder springs the shocks could not control it. If I tried going above a 7 on the Rancho it would unload the rear. With the mono we are now at 8 and will try 9, but the firmer spring seems to help control the separation enough that the shock can do its job.

'75 Plymouth Duster
Phase I 451 906/590/2-660 10.75/126
Phase II 451 Stage VI/590/1050 9.82/135
Phase III 383 906/Victor-Pump gas 11.30/119

"For by grace you have been saved through faith. And this is not your own doing; it is the gift of God,"