I think I know the answer to this, but I don't like it so I hope I'm wrong. Someone suggested using the looper to record the sound and then you can change settings easily while listening. I have the Helix rack and not the additional floor control and can't figure out a way to use the looper with it. As a last resort I read the manual and it says "Looper mode is only available if a Looper block has been assigned to a footswitch in Stomp mode." It seems I can't use this feature. Any thoughts. Thanks!