Bobcat Construction
RCpete,
Yes the steering servo is mounted backwards compared to the rudder servos.
bob violett recommended the JR 450 remote gain gyro, since they don't make that anymore you can get the 460T (which I am using) and it works really well.
Yes the Gyro can handle all three servos. Just make sure they are all working correctly compared to the stick movements and the Gyro corrections.
Just use another Y cable. Y cable the rudders together and then y cable the rudders to the steering then plug the second Y cable into your receiver.
Patrick.