3. Yes, there were some questionable no calls inside the box and/or just outside of it. However, as a referee in a game like that, you don't want to call a PK if it is not a blatant foul. That's not to say that it will never be called and you can basically murder someone in the box, but as SOREF said, you don't want to have something like that decide the game if it was agressive play.
4. The supposed foul on the Elder GK where he came out and took out the Mason player while clearing the ball was not a foul. The GK has every right to the ball as a field player. However, because he can use his hands, he has more leniancy for going for the ball. He cleary made every attempt at the ball and not the player, so that would never be called. I'm a GK, too, and I would do that every time without worrying about a call.
5. Speaking of GK.......the Mason GK made some pretty obvious fouls of his own that I saw but not in my jurisdiction to call. For example, on set pieces and/or corner kicks, the Elder player that stood in front of the Mason GK was continuously pushed out of the way by the Mason GK. To the Elder guy's credit, he didn't complain about it at all and continued to play.