Problems with pith bend in the slider

  • It is about using the pith bend in the slider. When I do that, suddenly the Sylphyo works half a tone upper: I play C, and it sounds #C, and the same with all the notes (without using the slider). If I try moving up an down my thumb, suddenly it goes back to the right pith. But I could not say exactly how I have done it. And, anyway, when I try to use again the pith bend, the problem happens again.