Hi all, Recently I've noticed a distortion in my right In Ear Monitor, which are Shure E-3's that I've used for many years. They've sounded very good the whole time, until now. I recently had my hearing tested, and my Ear Specialist said my hearing is "on the high side of normal," which was good news after playing electric guitar with loud tube amps since 1970. Has anyone had an I.E.M. go bad?