Hi, After having my casio for a couple of years, I am somtimes having trouble changing from one preset to another. When I am on the first preset, lets say 01, and I push, lets say, 06, many times it won't let me change to that preset. On my screen I see flickering of words like volume, or expression, so I think a slider or two is messing up my ability to change presets. Can anybody help??
David Shoff