Been a whole month on this one grrr. I have a MX300 reverb....focusrite 18i20 and Mix Control. I have the lexi showing usb and spdif lights lit up. Set to digital and external clock...just cannot get it to communicate with live. I think I have Mix Control and external effects plug in in Live connected properly but the Lexicon does not receive audio...any help or ideas would be awesome....thx