Hello, I have just wired up my mmb-4 kit as per the wiring guide on the pitbull guitars website. This is my first build and the bass works (yay!) but the controls are odd. The first knob (furthest from the lead socket) does nothing when turned except cut all sound out when it's turned all the way down. The second has a different tone at the mid point, and then the same tone turned all the way up or down. The third knob does nothing. My wires coming from the pickup all looked exactly the same as the wiring diagram except in the 'bare wire and two wires twisted together' one, I have just 2 wires twisted together, and the red one from the diagram is a bare and a red twisted together. Any ideas? Thanks for your help.