The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
ok, I have been through this very recently. I use a safety squat bar to squat, but that will not address the cause. The sore neck I had was from week rotators. LOTS of band stretches to strengthen that area, plus the last few mobs of smashing that K-star did at the nationals helped a ton. And the 5 corner stretch: