1.no they only buzz when connected to ailerons
2. They both buzz but if you waggle the TX stick they will come to a point and sometimes syop buzzing
3. Independent channels 1 and 6
4. Yes
5. It is still a buzz thats the problem. There is no servo twitching at all and they respond well to TX commands.

I think that is everything!!!

What is your diagnosis Doctor Servo????????????!!!!!!!!!!!!!!!!!!!!!!!