I agree that if there's a wide discrepancy in foul count, to discuss with partner at the half if we're missing anything. I sat in on a couple of varsity officials one night while watching my cousin coach, and they had a similar situation. They even asked me if I noticed they were missing anything. I told them they were calling it good because I couldn't find anything they could have done to make it closer on fouls. Had the same discussion after the game was over, and I did notice a couple that got away, otherwise it was a well called game.

This is the kind of situation where you feel it isn't fair, but it turns out you're usually calling it correctly and it may not feel right. I've had a few like that, and would go home and replay it in my mind and come to the conclusion there was nothing more I could have done.