ATTENTION GEMSK760USER:I bought GEMsk760 6 months ago and I experienced some problem with the style performance's sequencer bassline cutoff(delay in beats) during chord changed . I did upgrade with the new O.S and it's still notworking right, anyone out there know the answer,I tried to contact GEM and heard nothing from them . I like every thing else about my GEMsk760 arrangerkeyboard. I hope to hear from you.