I have wired my Jazz bass with a master volume, master tone, and a pan pot. The pickups are Dimarzio Ultra Jazzes and are hum cancelling. The control cavity is shielded, I have the bridge wire tack soldered to the foil and a wire from the foil to the casing of the tone pot. The pickup grounds are wired to the case of the volume pot. The jack is grounded to the tone pot. Both grounds from the pan pot are wired to the tone pot casing. I have used my multi-meter to check for continuity, and there seems to be continuity everywhere, yet when I plug in I get a buzz that goes away when I touch the strings. I have checked for continuity from the bridge to the control plate, and to all of the pots, and I get a beep each time. What did I do wrong and how do I fix it?