I recently purchased a clip on tuner for the first time (the Intelli IMT-500) and have hit an unexpected problem with it. The buttons for operating the tuner are quite loose, and whenever I play certain notes, the vibration of the instrument causes the buttons to rattle and creates an annoying buzzing sound, meaning the tuner cannot be left on while playing. Has anyone else experienced this problem with the Intelli or any other tuner? Has anyone got an Intelli which doesn't have this problem? And should I contact the seller and complain or is that just the way they are?