Hi! I recommend visiting www.sensiblehealth.com. There Julia Chang explains how a congested liver has a hard time flushing out stones. She sells a product called Chinese Bitters which helps to decongest the liver for a more successful liver flush. There is a wealth of info there.
Also, did you follow the Dr. Clark recipe? On my first flush I did & passed about 300+ pea sized stones. For my second flush I did some tweaking to her recipe & today passed 2500+ stones. I posted the recipe in the Liver Cleanse forum.