Thank you for replying. I was not familiar with your method. I find the Epsom Salts (it is vile and I will mix it with something other than water the next time), more so if you do not have much to eat the day before, really does a good job at cleaning you out. On the night of my flush, by the time I got around to taking the olive oil and grapefruit and after several trips to the toilet I was passing clear fluid. The big advantage of this is that you can see the stones you have passed the next morning without having to fish them out of any left over faecal matter. There is also less chance of them staying in your system longer than they have to.
The important thing about the Epsom Salts is that it is a muscle relaxant. This is why it works because it relaxes the bile ducts. It is aslo used, or has been used to prevent preterm labour in new born babies.
This could be why your results have not been very good.