Just wanted to give this thread an update...
I recently met Jim without having ever heard of JWN amplifiers. He was working as a service tech at a local shop and ended up completely re-working my old Scott 340b back to spec. I learned quickly that this guy is smarter than the average bear and super into the hobby. I understand there were some low times before(much as we've all had), but he seems well past them to me.
We're now into our second project restoring a pair of Maggie Mono Blocks that will undoubtedly sound sublime. Search out the other reviews of Jims work and you'll see he's a standup guy with some excellent designs.