Reworking someone else’s work can be double the trouble. If an unqualified works on your pickup, they can break or modify the components making for a quality repair. I’ve seen pickups with magnets ground, bobbins glued with epoxy, bobbins drilled, tapped, burnt, bent, gouged, cracked, exchanged, painted, dyed, shrunk and dozens of other bad modifications. Please what ever you do, make sure you know who is doing your work and what their reputation is.