I've set up several performances and they all work fine except for one of them: This performance is set up as follows: I have zone one as a user "drawbar organ" tone, and zone 3 as a PCM preset drawbar organ tone. I have them split on the keyboard with no overlap. (The idea is to have two separate keyboards to use, just like a Hammond.) Well, when I try to adjust the volume of either one, the volume of the other simultaneously changes as well. I don't have this issue with other performance/split keyboards that I've made - just this one. (I've tried using zone 2, 3, or 4 for the PCM tone. Same problem.) Anyone have any ideas??? Thanks