I've got a P22 that I love, but am considering changing the pickups. It currently has 5708s w/ bobbins, & I'm thinking of installing lower output PUPS with chrome covers. I don't have much experience with swapping electronics/soldering, & have read there are additional considerations given the piezo, such as flipping magnets in the PUPS, etc. Has anyone done this, & if so, what is entailed & how difficult would it be on a P22? Thanks for your insight.