I bought a brand new Dimarzio HS-2 to try out for the bridge position. The low A string was noticeably weaker in both volume and highend response. I tapped the lOW a pole with a screw driver, sure enough, it has no suction/magnet pull whatsoever compared to the rest of the pole. Being the last one they had, the store took it back and was going to get Dimarzio to exchange another one for me. *****They then called me saying "I" might have done something wrong that caused the low A pole to have no magnet pull.****** Dimarzio will recharged the magnet for me, I haven't asked the store if they're doing it under warranty. I've been working on guitar electronics and swapping pu's for more than 12 years and had over 100 pu;s, I have never encountered a strat pickup with just one of its pole to be dead. Anyone has any idea as to why the low A pole or any pole on a strat pickup to have no magnetic pull? Thanks!!!