Thanks guys for the ideas.

Yes both servos deflect the same amount. On the JR 9XII you assign a MATE to the elevator, which then gives you 2 elevator servos.

Roger good idea on voltage. I wll measure the voltage from the regulator and see if it is over 6 Volts. I am running it at the 6volt setting so maybe it is slightly over? Yes see you at Cudal.

As I have narrowed it down to the JR 9711's I will put ferrite rings on the leads and see what happens. Last resort will swap them out!