You just changed all your sag settings. You'll get better response if you adjust your suspension now.
Do you really think adjusting the rear height requires adjustments in the rear shock? Whats the relationship between rear ride height and the shock? I assume the lower the ride height the stiffer the shock? So lowering the height would call for lessening of preload?
Man, I feel like my S4 would finally be where it needs to be if I bumped up the rear a bit (in addition to the clip-ons I just mounted). Just how much of a PITA was it,
If you have an adjustable rear rod or "dog-bone" then you should have no problems doing it. You need two wrenches at the same time. One wrench to hold the rod itself in place and the other to loosen the nut at the end that holds it in place. Do the same thing for the other end then the rod itself is ready for adjustment once the two nuts at the end that hold it in place are loosened. By turning it in one direction you increase height and by turning it in the other you decrease it. Just have to be careful to make sure not too many of the threads come out of the rod itself. And don't tighten the two nuts at the end until you have taken it for a test ride or two in case you need further adjustments. Hope that helps.