Dear, I have a Ibanez premium with nordstrand big singles. The problem is noise when I touch the poles of the pickups. However, if I touch the string or bridge in the same time I touch the poles, the noise goes away. The gray wire (the ground of the pickups poles) is connect with the black wire in the electronics ground in the control cavity. The bass have shield in the all cavities. Please, exist some way to solve that problem?