The softer stones are cholesterol balls NOT OLIVE OIL! (as the other poster noted olive oil has NO cholesterol in it) So...you're clearing out your liver and gallbladder of stagnating cholesterol - a GOOD thing! The gallbladder stones that show up on ultrasounds are calcified and do sink, yes. The softer stones are the cholesterol balls. Since November I have heard of people getting out harder white stones...but it's only happened a handful of times, so far. Also, one woman had an ultrasound before and after a bunch of flushes and she went from 3 stones down to 1 stone.
Most people, even if they don't get their calcified stones out right away feel MUCH better with the flushes....and soon feel great!