i have the great planes 1/3rd scale matt chapman cap. this is my first big plane and i am having a problem. i am running futaba 9351's in the ailerons and elevators and everytime i turn on the plane the elevators start fluttering and i don't mean the servo's chattering , i mean major elevator flutter. mainly just on one side but they both do it. any way thought it might be a bad servo. replaced but it didn't help then tried the servo extension that didn't help either tried using ferrite rings, that didn't help. tried moving the antenna and even tried running the extension outside the fuse but to no avail. then as i was removing the entire right horzontal stab and elevator from the two aluminum tubes it quit fluttering as soon as the stab cleared the first tube. has anyone else seen or heard of this and what could be the fix? i really don't know what else to do. i even tried another futaba digital servo, (a 92520) and it still did it just not near as bad. any help would be greatly appreciated. thanks darryl