I have about 20 flights now on the 8411HV on the rudder. I am very satisfied with it. I didn't change the gears and they are plenty tight. The feel of the rudder is, IMO, better then with the 8911. I'm quite happy with it.

I did notice one thing with the 3711HV servos on the elevators. While changing the rudder I noticed that when I was in my spin condition, which has a lot of elevator throw, if I went to full stick then just released the stick, occasionally one of the servos would overshoot the center then return. Both of them would do it from time to time. These servos are original with the model and have 450 flights on them. I replaced them with two servos that had new pots and gears installed and this issue disappeared. The model now feels much better. So keep an eye on the 3711's when your flight total starts to get high.