Remember I took my Ibanez to a tech for the first time?
I asked him to replace the plastic nut with a bone nut.
Turns out he cut the slots extremely high, so I'm having intonation issues with chords on the lower frets,
and in fact I can't intonate the low E at all. It's sharp with the saddle all the way back.
How did I miss this one while inspecting it on his shop, I have no idea.
So I paid for a lesson: I'm buying the Stew-Mac nut files and I'm gonna learn to do this myself.