Just bought a new MXR M288 Bass Octave Deluxe and it doesn't sound like octaves, it just sounds like fuzz & distortion. Need help/advice on the growl and girth settings. Pedal sounds great with dry signal but whenever growl or girth is added it just sounds like distortion. Watched some YouTube videos for reviews/sound, they all sound great but mine sounds nothing like those. Are there signal pads? Sounds distorted on all my basses... User error maybe?? ;-)