Take it to a shop (i.e. Driver Source in Houston) that does track-setups and have it corner-balanced at your desired ride height. IMO this is the only way to get adjustable springs perfectly level. If you also track your car (solo), you can do the corner balancing with driver's weight in the driver's seat.
http://www.m3post.com/forums/showthread.php?t=790817
http://www.m3post.com/forums/showthread.php?t=801352