Hi, Just bought a used guitar (2014 ESP EII) with a Gotoh TOM bridge. I have noticed that the 14 and 15th fret on the B and e strings aren't ringing out very well in comparison to the frets before and after. These frets are producing a tingy/plucky sound rather than a full/thicker/bassy note (if this makes sense) in comparison to the surrounding notes/frets. I raised the height at the bridge on the treble side to a more than reasonable height and its hardly better at all. What could be the issue?