Hey Steve sounds like we're in the same boat. It's been 6, almost 7 months now since my LIS and things aren't perfect and continue to flare up from time to time.
Keep in mind what Val said...it tends to rear its ugly head for sure! I'm taking a quarter teaspoon of Miralax every day again. I know that sounds like a ridiculously low amount, but I am super-sensitive to that stuff and it works for me. It seems to be preventing more retears, along with a fiber supplement.
I remember reading in another thread (by Jas) that his surgeon told him he didn't need to see him every time he retore--that things should heal up pretty fast on their own now since he'd had the LIS. Maybe faster healing and less flareups are the best some of us can hope for, unless we're willing to take on another surgery.
I agree that it doesn't seem possible to get back to where you were before the fissure ever happened. Or maybe it just takes years...sphincters do get looser with age, right?