This one has me stumped. First off, I set up my Tele's neck relief, string height and attenuation to spec. When I pluck/thumb the bottom E string's harmonic at the 12th fret (as I do during an attenuation check) I get this fret buzz sound. Also, if I pluck/thumb an open E (same string of course) I get this weird dual out of phase sounding harmonic. If I fret the string anywhere on the neck there is NO fret buzz sound. I say "fret buzz sound" only because it's not really a fret buzz but merely has that sound. I don't get it. What could possibly be causing a string to react this way? Oh, and I did install new strings as well and I'm running this check un amplified.