I have an Epiphone Zephyr Regent that I love, but it has one minor flaw: the high e and the g both sound a bit buzzy when playing single notes. I can hear it whether or not I'm going through the amp. On gigs, I dont notice it much because I'm playing at a louder volume than when I practice. But it bugs me when I practice. The other strings are clear with sustain that I like, but those 2 just dont ring out like I want them to. In fact, I find myself using extra vibrato on a ballad or slow swing tune on the high e to try to get it to sustain more. Any suggestions for how to correct this? Full disclaimer: I use Thomastik Bebop 13's, I'm not sure if that matters here.