The measure of success of a Liver Flush is not the number of "stones" you get out.
It is how you feel the next weeks and months after.
You are not flushing in order to count "stones", I hope.
I hope you are flushing in order to improve your health.
Did you experienced any improvement in your health, your skin or your digestion since flushing?
If yes, that is all that matter.
You don't have to get a single "stone" out, but a flush can still have an effect on your health, an effect that you may be able to feel days or weeks later.