Just as an aside, and I’m not being flippant because my ears are not super trained in this kind of thing… how would I know that it’s the intonation that’s out and not, say just one or two poorly tuned strings?
My presumption would be that the higher up the register you play on each string, the more “out” it is? 🤔
And on the flip side, if that were so, a skilled tech/musician might be able to compensate by having the nut tuning slightly out to correct the tuning up the neck (if most of the track was to be recorded in a higher register on the instrument) 🤔