Bob
I had to reply to your post. I can really feel your pain. My doc says I am the poster guy of kidney stones. I have had over 59 stones in the last 9 years. That stent with the string on it, don't cut the string shorter, you'll pay a price. I've had 4 removed with the basket 3 tripo's and passed the rest. I carry hydromorphine when ever I travel and keep a few extra pills in the car. I drink water like it is going out of style, but my stones are heretitary. Good luck and I hope you don't have anymore.
Craig