Hi guys, I'm new here, not sure if I'm posting this in the right place. Looking for some help. I purchased a Line 6 Helix HX effects this weekend. I'm setting it up via the 4 cable method. I've followed the diagram on the cheat sheet provided by Line 6. I'm not getting any preamp gain and the knobs on my amp do not work at all. The only sound I'm getting is a clean sound from the power amp section. If I switch channels on my amp nothing happens. The effects from the HX work. I've even figured out how to set up the HX to change channels on the amp. I'm thinking there is some parameter in the unit that I am not turning on but I can't seem to find it and I've been reading the manual all weekend. My amp is an EVH 5150III lunchbox amp. Any help would be appreciated. I'm new to this effects modeling stuff. Thank you.