I have the MK II Express pedal and a Spider V 60 amp. I can't find any way to start and stop the recording of the Looper on the amp. The MK II manual doesn't mention this and is mostly useless to me. I can control it by pressing the button on the amp but this leaves a blank space in the loop as I reach for the button. How can I set the foot pedal switch to start and stop the recording? I have also looked at the Line 6 FBV control software interface with the foot pedal connected to my computer but there is nothing that says start/stop looper or anything close to that.