I'm not at the Stomp at the moment, but I've set up a preset template in Helix Native that should basically do what you need:   2-ch mono.hlx   Using EQ and Gain blocks as placeholders, replace them with whatever blocks you need. Firmware/HX Edit v3 required. Note that if you go one jack in and one jack out per channel, each channel signal will remain mono. While the outputs accept TRS jacks, that's for having a balanced signal, not a stereo signal on each jack. So there