I have a new Eflite S-60 servo on the ailerons of a new foamy that just twitches like mad. I replaced it with another new S-60 with the same results. I tried another receiver, ESC and checked for binding in the linckage and have none. Usually if this happens I find it to be a bad servo but not in this case. It does not do this if the aileron linkage is disconnected and when it does do it it's when you move the ailerons and then go back to center in most cases. With prop wash going over the ailerons it does not do it. To stop it all you have to do is touch the servo or ailerons. I'm lost here so any suggestions would be great. Thanks to everyone for their thoughts.