Thanks Cagey.
I got Hipshot open backed locking tuners. I took the locking advice.
My problem is, from what I'd read I gathered the Hipshots would work great with the Gotoh dimension holes. That's not the case. Sloppy.
To me, a proper fitting tuner's shaft should be making contact, or dang near making contact, all the way around it as you insert it into the peg hole. These holes allow the tuners to wobble side to side slightly even when fully inserted.
Will they work? Sure. But after spending all this money and effort getting a guitar that is specifically supposed to be a high-performance, no sloppiness, no "almost right" about it, I am thinking I should return the Hipshots and find something with the exact dimensions I need. I'd rather have to ream the holes slightly to get a proper fit as you described than have a sloppy fit that's gonna harm tuning stability, put stress on the screws, and REDUCE CONTACT. I am a big stickler for that. All about transfer, and I believe that point of contact is at least as important as the nut, if not more. Crucial point in the feedback loop of vibration transfer to the headstock.
At this point I think I'll just order Gotoh locking tuners, because my only reason for not doing that in the first place was to support a USA company. I'm also gonna have to order oval buttons if I stick with the Hipshots because the shape of their buttons is such an eyesore and incongruous with the rest of the instrument (to me)...so that's more money.
Thanks all.