Time will not allow me to answer as I would like, but I do want to say.....WOW!!! I wish I was as good about juicing as you.
My advice is to keep on flushing every couple of weeks. That is what I did and it was the 3rd and 4th flushes that produced the biggest and darkest (oldest) stones.
Lots of posters have posted regarding their pain, so it's not just the ones who are doing it for health.