The spring rates are way off for both street and track in my estimation. They are much too soft. The valve adjustments don't seem to have much effect.
I don't understand the spring rate comment. You get to PICK your own rates when you buy Aldans, so you could have simply asked for stiffer springs. Or if you guessed wrong, changed to stiffer springs. I agree the adjustments do not make a huge amount of difference. It is too hot to drive the Viper and have fun still here in the desert, but during my little bit of testing I like my Aldans so far. They allowed me to set my own height (I went a bit higher than the Eibachs), correct my lower driver's rear corner, pick my own spring rate (I went softer than the Eibachs), adjust damping while on the car, and install different springs without a spring compressor. As long as they don't break, in the world of Viper parts $1,100 for all those benefits is a great bargain. The car rides so much better now (smoother ride than my SRT-8 Jeep) and where the Eibachs would bounced and allow tires to disconnect from the ground, my softer set-up on the Aldans does a much better job for me.