I agree with the settings, use them. However, unless I am badly mistaken preload can do much more than just change the ride height. True, at zero preload you are just altering the ride height. But, if I understand correctly, you could make out the ride height, but still keep adding preload. So at this point, the shock is fully extended (with no rider of course), but you can still add preload. I think I am correct, but I reserve the right to be wrong...your shocks have settings, dont be afraid to USE THEM. track your changes and observations of the way the shock reacts. if you dont like it then youcan always go back.
I just found out what the preload does. it only changes the ride height on my elkas and it doesnt bottom out as much.[/b]