So, I have connected my Helix to my EVH 5150 50W Head using the 4 cable method and I’m getting a great clean tone, however the knobs on the amp are practically useless, and the channels do not switch to their respective sound. It’s as if I’m just using the amp as power amp (that may be the point of this connection method). I want to use my helix like a pedalboard while using the drives on my amp. Is that possible? Someone please help. Thanks!