Cool! thanks for the responses. So I will try this alternate method and see if I get more stones out. I dont mind, if we have to delay the eating and drinking by 2 hrs. A little more discomfort but ppl are saying its worth it.
I have done 2 flushes. Got ~45 in 1st and ~90 in second. ( all very small) . I will definately try this method and post my results.