Hi newbie here.  I am trying to find some advice on the Dimarzio DP155 pickup.  I have two - one is brand new, 17k ohms and just fitted to replace an older DP155 which only had 8.5k ohms across both coils. 

Both are clearly stamped with DP155 and Dimarzio on the baseplate. 

I was wondering if Dimarzio revamped the pickup at some point, nearly doubling its resistance ?

Many thanks

The Tartan Blues Warrior