The flushing process takes a while, so try to be patient. I can imagine that after seeing 1000 stones you want some results, but it took me nearly a year of flushing every 3 weeks to get relief from my back pain symptoms that were referred pain from my gallbladder. I have no idea how many stones I've passed and although the pain is gone I still pass a few small stones when I flush. I think they're still coming out of the darkest recesses of my liver and it's entirely possible that I'm still making new ones, the same way I made all the old ones. I intend to keep flushing, though not every month, for the rest of my life.
Just keep going with the flushes and try not to get frustrated.