I have just loaded my new aerotech yak with these impressive high torque digital S9352 servos and have nearly finished the model. I run a 6 volt regulator and li-po's for the reciever power. Three of the 5 servos are violently gittery around neutral. I have swapped servos round. used ferrite rings on the extension to the elevtors and I now don't know what to do? I have never had this problem before. Can anyone offer any suggestions as to what might be happening??

Thnaks