Some options to think/look at

1) sometimes a new specialist is helpful, they see with a different set of eyes that maybe the PT had missed
2) shoes, custom orthotics might solve some things, you can stretch and stretch but if you are in poor footwear and/or on bad floors (like working on a concrete floor with little shock absorption) you canl remain with chronic pain issues...
3) technique you use for your sport, like running, if you have issues with gait then that can lead to chronic issues as well...

good luck!
han