JR 4721 in my plane as well as some other JR servo's. Centering is more important (to me) than overall power. Elevator, Aileron and flaps at around 120 oz in and then 180+ or so for the rudder if running the TW along with the rudder. I use as short a horn on the servo and as long as possible on the servo gives the best mechanical advantage. 2 Life batteries power the airborne radio.
I flew 7 flights over the weekend at Warbirds and Classics. It lands so slow!
Sparky