The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
Yes it is probably a combination of elements impacting your ability to grip the bar.
Here are a few to start with.
Episode 44: Global Dehydration and Stiffness, Pecs, Tri’s and Internal Rotation
Banded Lateral Opener
Super Front Rack
Overhead w/External Rotation Bias
Daily Rx January 18