I have a week old PX560 and edited my first tone, Strings#1 to lower the volume to play with the Grand Piano #1. Anyway I stepped away for a bit and when i came back to play, with the strings off, only the grand piano sound on, it really sounds wierd now, not at all like when i first played it. I perform a Factory Reset and I still have the piano sound issue. I called Casio, no help. What do I do?
Should I reinstall firmware?