That thing has some mojo...I would leave it alone (except for the new strings, as stated earlier) unless it plays like crap. If that's the case, set up the action properly or pay a professional to do that.
Seems to me the older pickups are the better they sound, but I have a tin ear. Guys talk about "warmth" and "bite" and "bell" or "piano" and frankly I think they're nuts. Shrug. Don't get me wrong--given the accolades he has received and the obvious work he puts into his product, I'm sure Wolfe's pickups are some of the best out there. But I would never be the one picked to make that assessment.