Thanks for your answer. I always get diarrhea before the oil, the Epsom Salts just do that to me very quickly. Anyway it has been my most successful flush to date, 240 stones so far. I definitely get more when I leave it longer than 2 weeks between flushes. I guess that once you start flushing, things start to move around and more stones get pushed through the ducts so it is a good idea to keep flushing one you start until you are clear of stones - am I right? This would explain why my symptoms returned between flushes when I left it longer than 2 weeks.