How exactly did you follow his protocol. Did you eat a whole foods vegan diet for a week leading up to the flush? Did you avoid any fats the day of and the day before the flush ie avocados, olive oil, etc. Did you drink 32 oz of Organic, Unpasturized Apple Cider or Apple Cider Vinegar everyday for the week of the flush? Did you eat any heavy protein or fats durring the day of the flush? If you don't follow it to a T, then it could be the difference of 20 stones and several hundred, correct times and everything. If you did do everything exactly as written, then try taking chanca piedra too, I use Rainforest Pharmacy. Some people just don't pass any stones there first time and there's nothing wrong with that, hang in there.