Ahhhh. I tried that too and it still doesn't turn the effect on. I updated the firmware to 3.71 too. Something is happening with the Feedbacker effect being set to off as default. I just did a test for PC6, which is a Wah preset and when it switches to the effect, it's on. So this leads me to believe there's something weird with the Feedbacker effect being forced to OFF by default. It's just frustrating that CC0, CC1, or CC4 (all meant to turn ON) don't actually override. it.