I have a bass (Spector ReBop4, bolt-on neck) that is difficult to get setup correctly. I have adjusted the truss rod, set the bridge saddles for height / intonation, all the usual setup steps. However, the notes above the 9th fret don't sound right. Instead of clear and defined, they have a thinner, pingy sound. I'm wondering if the neck pitch is off and that is what's causing the issue. What is the proper way to check neck pitch and what should it be?