Did you hook it up like this?

THR <- -- Main Rotor (on 3in1)
ALE <--- Aleron Servo (Port)
ELE <--- Elevator Servo (Front)
RUD <--- Gyro <--- Rudder (on 3in1)
GER <--- Gyro Remote Gain lead (Single wire)
AUX <--- Pitch Servo (Starboard)