Fast doesn't seem to be having any discomfort. He has to strain a little to get the last little bit out and his quanity and volume really suck. We did notice that if he happened to pee within a few minutes of rolling he does do much better. My vet and I assume its because for a little while the stone moves away from the urethra opening in the bladder. We have thought if he starts having difficultly peeing we could catherize him and flush the bladder once a month or so. I'm hoping that won't ever be necessary.
What is semi comical is that before all this happened if anyone would try to look at Fast's "manparts" it would be gone in a flash. And God forbid you tried to touch it to look for a bean or clean him. Even drugged he kicked at the vet. Now he's dropped all the time and could care less what you do to it!
I hope all goes well with your guy. We never scoped Fast - just did an Ultrasound. I bet the camera stuff will be really interesting. Keep me posted and good luck!