I got the Steinberger tuners with professional installation. They helped with the neck dive, but didn't still didn't keep that Firebird in tune. No matter what I tried, that Firebird thing was just not able to be reliable guitar. It was such a prima donna - I'd have to warm the neck with my hand before I played it (even in summer), I couldn't put bend too much, I couldn't strum hard, I'd have to check the set up routinely as measurements would slip microscopically enough to affect the overall intonation, I tried all kinds/gauges of strings and could never find the that worked for it, etc etc etc.
I don't know if that one was just a lemon (it was a 2010, after all) or if that whole Firebird model is flawed. But I think I know more about why those are sort of sought after but aren't widely revered guitars -- they look amazing but require more work than they're worth.
In the end, I swapped that guitar for a 2005 Les Paul Standard. So much better.