Hi loswave, I took your advise on the endpoints, and that stopped the servo buzzing, but unfortunately this glitch is still here, though having impatiently maidened the plane anyway i found it doesn't effect its flying too noticeably, (but its annoying to know its their) I tried another servo but this still didnt help, but the plane is certainly flyable, as the twitches are relatively small. Just searching for perfection i guess.

Thanks for helping