I am running the kit silver springs from the "s" and to get the ride height i want in the back the collars are so high that when the car is on the stand the springs sit probably 15 mm below the collars. Basically when the car unweights there is nothing to push the arm down. Is this correct? I need to order some springs but dont really know where to start. I am running lipo and our weight minimum is only 1400 so i am thinking the silvers are way to stiff, is the blue the only thing softer?