I can not for the life of me get my low b to sound quite right, I've intonated using the 12th fret harmonic and 12th fret perfectly, but the low b never sounds quite right. Especially if I do drop A, it's definitely off. If i tune by ear and play where it sounds in tune, the tuners clearly show the string being flat. What's going on? It's not the guitar, my old 7620 did this too. WTF!?