As far as balancing stabs go on bigger planes I always do it now. I have never seen a plane crash because it had balanced stabs but I have seen them crash because they didn't. Also make sure you guys have tight hinges on the rudders. The one that crashed at topgun last year had rudder flutter and the vertical came off in flight before it crashed. I was looking at what was left and it had tons of play on the rudder hinges and also rudder linkage itself.