Thanks for the reply,
Neah, the servo is not digital. And the buzzing sound occurs even when centred. When you say that the servo saver is bind too tightly....do you mean that the screw connecting the servo to the saver is too tight? or the servo saver is too tight for the servo?
The previous servo on the car was a Hitec one, I tried to pull the servo saver (plug?) out to put in the Futaba one, but couldn't so i just put the HItec one in. Any advise on how to get the (plugs?) out of the servo saver?