not following you exactly...but...a true coil over shock has a pre-determined installed length..measured between the mounting holes. with the vehicle on the ground, measure between the mounting holes, if you cannot achieve proper lenght with spring adjustments, then you need a different spring rate, once this length is achieved, and your desired ride heigth is off, that means the shock mounts were not installed in the proper location. i have never heard of any spring spacers for coilovers. also make sure you have the proper length spring for the shock. rear shocks are available for a 12" or 14" spring. hope this helps