My current pet peeve - inconsistency on out of bounds calls. It's one thing to see differences between referees (still don't like) and another to see inconsistency in the same match. If a takedown isn't given to green in the first period, then it shouldn't have been given to red in the second period. However, I might have called stalling on red a little earlier - but would have coached my kid to do the same thing!
JMO -