You should set preload to 2/3ish of total stroke. Dampening has pretty much nothing to do with ride height. It just dampens the rebound, why it's also called rebound. Suspension geometry matters. I dropped my wrr's forks down in the triple clamps n it started getting a little wobble. If you make the wrong adjustments it can screw you. There's more to why I had a problem with the whole post but that's really the worst of it.