Why haven't you tried Dr Clark's kidney cleanse?
http://curezone.com/clark/kidney.asp
Her kidney cleanse helps dissolve kidney stones and helps the kidneys flush toxins.
However, be aware that some stones may not dissolve complete and could painfully pass.
Also, Gold Coin Grass will help break up kidneys stones as well as gallstones.
You can get it here
http://www.sensiblehealth.com/store/