Brand new PC. Using a Keystep Pro. MIDI out using the adapter that came in the box. Track 2 out set to channel 2. If I rotate the knob on the PC all the way left (omni), it accepts all MIDI. When I rotate it through the channels, I get nothing. I've reset it. Had to power cycle it the first time I powered it on as it wouldn't take any MIDI originally. Wondering what I'm missing.