Yo yo, I havn't adjusted it at all cost me like 300 all up with a wheel alignment and height adjustment to lowest legal, they setup the stiffness on what you say I told them I will be using it mainly for street and a bit of track work so they did so quite well I think (traction tyres in rowville) so couldn't answer your question apart from recommending to get someone else to do it, because they gave me a sheet with camber % and all these different readings which I had NFI about, and even if I did how the hell would one get into that much detail in there own garage with a jack.