Something mechanical to unlock a tick of two of velo? Maybe. But I don’t see that (or endurance...he couldn’t get in any better shape) as the primary issue, either. Command and consistency. He’s aggressive (which I love), but his stuff is not so dominant that he can consistently get away with mistakes (unless of course he’s pitching against the 2017-2019 Royals, Tigers, or White Sox against whom he padded the stats you cite quite handsomely). Berrios already has a combination of velocity and movement that is solidly above average. And while, to his credit, he’s been consistently willing to throw the ball over the plate, his command within the strike zone seems wildly inconsistent and sometimes, flat non-existent.