Last word that I heard - more correctly read, here on LTG - from someone that was involved at the time that Fender did the reverse engineering, is that the NS bridge pickup is absolutely messed up. There's no question, but then again, there's no changing it.
I believe (without proof) that back in the 60's, Guild did not intend for the neck and bridge pickups to be different. So it seems the simplest option with the NS instruments is to simply buy a neck pickup from
guildguitars.com and install it in the bridge position. Or swap neck<->bridge if you don't want to buy a new one. Could be the underwound 'bridge' pickup would sound awesome in the neck position.
The fly in the ointment is that I have a suspicion they made the two different heights with the bridge version being physically taller. This might make swapping difficult.