i just had the Emerson custom 4-way prewired kit installed. The tech guy called and told me that both my pickups (neck,bridge) are north polarity so there an abnormal amount of hum in the 2 and 4 positions. He said usually one of the pickups are a south polarity but not on my guitar. Does anyone know if this is a mess up or is it suppose to be like that? Just curious.