Reciently, When I hold the High E string down on the first fret I get weird rattling noise. It sounds okay on every other fret except that one first fret. Although it may seem like it wouldn't matter, it really conflicts when I am doing Dm or F chords cause hiting that high e will through the whole sound off. I own an Epiphone Les Paul Standard and have had it for a year now. Any ideas what could be wrong?

- Epiphone Les Paul Standard
- Saga LP Copy
- Godin Seagull Acoustic
- Roland Cube 60
- Fender G-Dec
- Jim Dunlop Crybaby
- Guitar Rig 2