My 'Ray developed a buzzing noise some time ago but the problem passed. A couple of days ago the noise started again, this is some 5-6 months after the previous noise started. It only occurs on the 8th fret on the A string, but doesnt happen if I push my fretting finger down as hard as I can, or if I rest my finger on any fret lower than the 8th. Its annoying because the sound also comes through the output, so its getting recorded. Anyone got any ideas??