I'm new to Line 6 but decided to try the HX Effects because it looked like a simpler solution to what I've been doing. I spent all morning setting it up with the 4-cable method and got some great sounds, but my goal is to use it in stereo with the 7-cable method. I've got my two amps connected properly, I made an all-stereo pedal board, but I'm getting nothing out of my second amp. I just spent about an hour in the manual and the HX Edit software trying to find a way to make it work, but I'm stumped. What am I doing wrong?