If your basic posture sucks, this may be the simple cause of your failed "third knuckle test". Get into a better shape and see if you can't immediately fix your shoulder position. Start with this, then work on the mobility and activation drills to help make this improved posture your default, automatic resting posture to the point where it feels effortless to maintain.

Quantum CrossFit http://ift.tt/1r6aWWF