hello, I have been using my Yamaha P125 as a midi controller for live gigs. it's really the perfect controller for me because it also has a built in audio interface so i don't have to bring extra gear. i only use an ipad to layer additional synth sounsa over the built in piano or electric piano on the p125. the only problem im having with this keyboard is that the sound panel is also sending midi messages which is causing my presets to change whenever i switch to a different sound. has anybody figured out a way to disable or even change the midi channel only to the panel so i can avoid this problem?