Ron,

It is important to find out what kind of kidney stones you are getting to determine the cause:

"A patient may be asked to collect his or her urine for 24 hours after a stone has passed or been removed. The sample is used to measure urine volume and levels of acidity, calcium, sodium, uric acid, oxalate, citrate, and creatinine (a byproduct of protein metabolism). The doctor will use this information to determine the cause of the stone."

Have you been watching your calcium/magnesium intake? This is important. Also, water intake is important. What are you doing already for your problem?