Dear Dimarzio fans. Do you know if Dimarzio BSC70M1 is south or north up? I belive its oem version of blue velvet from middle position of music man silhouette special. Traditionally middle dimarzio singles are south up but...Regarding to the diagram from mm website in 2nd position bsc is connected with south (screw) coil of bridge hb-so should be north up. Any ideas?