I agree with the OP about Perk needing to grow up. It's obviously frustrating getting bs fouls called, but fouls don't get reversed, so pleading one's case isn't going to get you anywhere, even if you're LBJ.
But last night's 2nd tech was like nothing I've ever seen. i know it's been rescinded, but I feel like Perk made less of a reaction than he normally does. He made a face, muttered some words, all with his back turned, and was on his way. Still can't believe it. And like others have mentioned, maybe Davis doesn't get a concussion and Sheed doesn't tweek his back....frustrating stuff.
Forgive me for being unobservant and possibly asking a dumb question, but, is it the same refs for the entire series, or do they change game to game?