Good to hear you see improvements with working on it.
There may be some compensations that you make downstream of your neck on one side that you see at the t spine/shoulder.` Many times the athlete isn’t aware compensations are happening. Finding slack within the system so you are able to perform skills/achieve the needed shapes to do certain skills.
May be it would be helpful to have someone video tape you doing skills that are impacted. This way you can see exactly what you are doing vs what it feels like.