Hey fellow PRS friends, I'm having some issue's with tuning stability with my 2011 Custom 24. When I first purchased it brand new, it stayed in tune incredibly well. After a few years of owning it, I decided to have a bone nut installed by a mediocre guitar tech. After she botched the job and made my tremolo non-floating, which I didn't ask for, I took it to the old local shop down the street from my grandmother's home. They've been working on guitars for many, many years and charge a solid price. I had them set-up the guitar the way I like, and it was pretty good, perhaps not as proper as when I first bought it, but the tuning was good. Eventually, I became more aware of how some of the strings, primarily the G and B, went out of tune half-way through one song before it sounded off enough to disrupt harmonic alignment; it sounded bad. I took it to the same shop down the street and had a new bone nut installed (it looks better than the old one, done by machine I was told), and a set-up. It has still been giving me issues. I'm not sure if its the bone nut that is causing the issue, the tremolo, or both. I'd ideally like to keep the bone nut because I dig the tone of it on the open strings, which I play quite often. I have a feeling it has something to do with the tremolo, more so. During the last set-up, Lou the tech changed the range of the G, B, and high E strings to raise from half a step (what it used to be, originally), to a full step (what it is now). He told me this is what he does to most guitars, as it's more usable. I was fine with it, but I'm not sure if this change is exasperating the issue. What do you think I should do? I'm thinking about taking it back, telling him it still isn't top shape, and having him change the higher strings back, tremolo wise. I don't even have the tremolo arm in my guitar, and it's still being affected. It's discouraging me from playing it as much as I used to. Hope you guys can help me figure this out, thanks!