Most players do not study adjustments until the instrument starts pushing back in small, confusing ways. One day, the chords feel heavier, even though the hands are warmed up. The next day, a note buzzes only on one fret, and then disappears. Tuning looks fine, yet something still feels slightly unstable. These moments rarely arrive as a clear problem you can point to. They come as a shift in comfort, and comfort is hard to measure.