RE: Balanced Elevator
I was hoping someone would mention a fighter like the Spit. It also had obvious tabs on the elevators as well.
It's interesting to see how those tabs evolved as newer designs came out and as speeds went up. There are fewer tabs that reach the leading edge of the fin. Full scale design seems to have appreciated the value of putting the balance weight farther forward and used the structure to give that weight more moment.
Notice the rudder's tab on the P51 for example.
And notice what the Corsair had on all it's tail surfaces 'cutting the air' for the tabs.