Will new XHD springs relax a bit?

Thanks to all for your input. My springs are XHD, not SS. I installed the 2 hole front hanger (as shown by Johnny Dart above) since I went from s6 to 360 engine, and I relocated to the upper hole. This gave me the rake I like and now I have also had the alignment done. The right side rear wheel opening does sit about 3/8" higher than the left, but it is not noticeable and may be built into the spring. Pinion angle still in spec. I'm happy. Put about 50 miles on the car so far, and though they are stiff springs I like the ride. Time to change my Avatar picture.