Certainly not to change the topic, but, only to point out that Yamaha does, indeed, have problems, occasionally, with new products----here’s my tale: Way back when, I bought a new Tyros 2, only to find out upon arrival that all of the styles played out of tune with the right hand voices-----a full step, or more. Yamaha had me return it for repairs, which they kindly made. It worked out OK, despite the hassle for a while.