Thank you for responding.  I have to say, while his overhead and front rack archetypes are considerably improved since his joining my gym, he scores a zero on every range of motion test in his shoulders (and hips, and ankles…wow he’s tight).  Front rack is definitely one of his goats, he struggles keeping his elbows locked in OHS, can’t straighten arms on the bottom of a pull-up.  Basically, the root cause is obvious, I just needed a quick kick in the butt to remind me because after a year of advising his progress, it’s easy to get disheartened.  Back to the mobility grindstone for good old Greg!  

Thanks!