RE: Ultra Stick 120 Lite?
Ice Man,
I fly a USL with a G-26, and I also have signficant experience flying a friend's with a Saito 150. In both cases we are using high torque servo's for rudder and elevator. I have standard servos on flaps and ailerons, but I'm using the quad-flap setup so the indivdual surfaces are small. If I were using the conventional ailerons, I'd have put in high torque there also. If you are going to stick with the 3004's, I'd suggest that you go with the 40-size or at most the 60-size Ultra Stick. The 40 screams with a OS50SX, and the 60-size works well with a Saito 100.
This plane is a great all around fun fly type of aerobatic plane, but I don't feel that it's a great 3D plane. It hovers nice, but lacks elevator authority needed for a lot of other maneuvers. The rudder has plenty of authority, but there is a lot of roll-coupling. This is another area that the 6EXA is not good - no dual rates or exponential on rudder. This is one of the reasons why I upgraded to a 9C.
Greg