I just did a flush for the first time. I posted about it today. Before the flush my friend and I did The Master Cleanse for about a week. After that I ate mostly salads, vegetables, and fruits, and added psyllium & Bentonite shakes several hours apart from the meals. I took anti-parasitic herbs before and after meals for a few days before the flush. My stones were not large, hundreds of ones smaller than the size of grains of rice, and some the size of small peas. It sounds like what you're doing is working. Maybe some colon cleansing before flushing would be helpful.