Thanks for the input.....I am currently waiting for an answer from Futaba........and like the really helpful chaps they are,

here it is..........

Thank you for your recent e-mail. "We often receive calls from customers who will mention that they notice "servo chatter" in their ball bearinged servos. Always check your linkages and set ups for binding, servos fighting each other on the same working surface, and bad extensions to be sure that there's no problems in your physical system. Assuming there is no binding or other issues, buzzing is a common and harmless occurrence, and indicates that your servo is "checking" itself for true center. There will many times be an audible "buzz" from their servos, even when there is no noticeable movement. And this is also harmless, as when the plane is airborne, the wind over the control surfaces, and thus load on the servo itself, will correct this small amount of vibration and noise. Many times if a modeler is using a 6 Volt receiver battery, or a completely fully charged battery, they will notice buzzing, but, when the voltage drops slightly with some amount of load, the movement and noise subside. This is commonly known as 'a hot charge' and again is perfectly normal and will subside under loads and particularly in flight."

Sincerely,John G.- PS9004Product Support Lead TechnicianFutaba Programming Technician

I will put on some static balancing on the ailerons and see how it goes. Better to experiment in the workshop than take a bin bag out to the flying strip!!