I'm a new player (one month in) so this may be a dumb question. I have a Jackie EC which I really enjoy playing but I've noticed that alot of the reeds seem to be rattling a bit while sounding . A low frequency rattle (or very slow buzz) like someone shaking a pair of dice in a cup. I've taken the ends off and cleaned the exposed side of the reeds I've got shiny reeds now but the rattle remains.. .The valves look ok, nothing warped, torn or missing and the action looks ok too although I'm not