On average, every third CO was a dick. You'd get the friendly, easy going, charming guy who everone loved, then he'd move on, and you'd get either a younger one on the way up, or an older one, on they way out. They were mostly forgettable. Then - the new guy. The company man. The self righeous prick. He goes out of his way to piss people off with his strict interpretation of WT rules. Not written rules mind you, but oral tradition handed down from on high from the Watchtower.
It was these guys that actually helped me see through the BS of the man made rules passed off as if from Jehovah.