I am the proud new owner of a CGP-700 bought at Guitar Center. I love this piano! In my early discovery of the instrument I have encountered a couple of issues: • How does one delete a saved registration? Or change it? • I need to change the balance between two voices in a layer. I do so within my saved registration, and as long as I stay with that setting, I'm good. But, if I change registrations and come back to the first registration, my balance setting is lost. It reverts back to 127. How can I change the balance and keep that setting? Any help will be greatly appreciated.