But mine does fine
with its strange mix. Two HiTec HS-300 servos for the ailerons, two HS-303 for the throttle and elevator, and a Futaba S-148 with the EMS BB conversion for the rudder. The radio is a standard size Futaba R127DF, and the battery is four AA 800mah Sanyo.
Rudder and elevator have been converted to proper pull-pull, got rid of the thin wire supplied.
With the OS 46FX engine pulling the APC 12.25x3.75 prop I have no lack of power, and the airplane exhibits no need for weight reduction.
While I agree the HiTec HS-205/HS-225 sertvos are excellent, and I'm using a fair number of them, this plane doesn't need expensive/special servos to work fine.
Bill.