i think the reason you feel the burning is because you aren't using enough lemon juice and your liver is working overtime trying to digest the stones instead of flushing them out
me thinks the lemon juice is what breaks them up so the liver can flush them out with the whoosh of bile that is released when the stomach encounters such a large amount of oil
use grapefruit juice if you don't like the taste of lemon, it works just the same
also be sure to drink the Epsom Salts water as that will help your colon to evacuate them more quickly
otherwise they will slug through your gut giving your body time to reabsorb the liberated toxins