How can I take a preset variation pattern ( from banks L-Q on the Mc-303 )and modify it? I want to re-work a preset variation pattern and drop it into the L bank, but I keep getting the ERROR 8 message.Is this possible? I know in the manual it says you have to work off of the original, but I can't find the original pattern. I am trying to modify pattern n43, and pattern P43. Thanks a million. - Merriphew