yup.. i've cut super short (till the insulator is gone), just about right (sand bit by bit till the sound comes on) and where it should be (1 - 2mm off the insulator) it all doesn't work. plus i've tried firmware 3.03, 3.10, 3.40, 3.52 still no effect. i really hope someone can prove me wrong!! cause i want it to work too!