I am a keyboard technician for a local symphony. They just purchased a Kawai MP6, mostly on my recommendation. However, I am having a problem. I am trying to set up the SOUNDS so that when you press E. PIANO you always get CELESTA; and when you press STRINGS?VOCAL you always get CHORUS; and so on, for all 8 SOUND selection buttons. However, every time I set up CELESTA on the E. PIANO and STORE that for POWERON, it works - but then if I set up the STRINGS/VOCAL for CHORUS and STORE that for POWERON, it store that,,, but then cancels out the previous E. PIANO (CELESTA) sound!! In other words, it will not store 8 settings for 8 sounds. Am I doing something wrong? OR is this unit broken? Please advise, I have sent a message to Kawai tech support, but so far, no answer. I do not want to let the 30-day return policy lapse on this unit, if broken. Thanks in advance for your help!