For the things that alleviate the problem did you continue doing them?
Lasting change can take time when its not a new situation and the muscles/tissues are in new positions/positioning. They need reminders about the changed positioning. Just as with breaking any habit or making changes in technique reminders are important especially in the beginning.
Episode 69: Triple Extension Problems + Clown Ball Champion
Has anyone look at your technique?
It may be a technique or load ordering deviation where this problem originates.