So I'm following up with some slightly bad news...
It seems as though the toggle switch is seizing up on me. When kicked into the bridge position, I really have to tug at it to move it into the middle position. I'm afraid that too much force will cause further damage to the switch or worse - collapse through the top of the guitar. I've got it in the middle position now, and thankfully due to Guild's wiring scheme, I'm able to just go back and forth manually by dropping the volume out on whichever pickup I don't want to use. Kind of a pain, but better than breaking something!
The other not-so-good news is that the bridge pickup *may* be problematic. It sounds great, but my tech had to jack it up pretty high AND raise the polepieces to try and get at least some partial balance between it and the neck pickup. Now I know the neck pickup is always going to give more output being in the position it's in, but I've played similar era SFV's and SFIV's that had much more powerful bridge pickups than the one in my '64.
What's the going rate for a 60s small humbucker? I haven't seen any on ebay in the past two weeks, which makes me a little nervous. I'm thinking that even if there isn't a legit serious problem with the pickup, I might shop for one anyway. Same goes for the toggle. Just trying to make sure I keep this thing vintage-correct in the event I've gotta do some parts swapping.
P.S. There is what appears to be a full wiring harness for a non-MV 60s Guild archtop/semi-hollow on ebay for $199 that hasn't moved since the auction opened. Is that something I should consider? Right now my biggest concern is the toggle because I want to be able to use it.
Thanks!