I have a WiiM Pro, latest firmware, latest software app connect by ethernet, coax out to Marantz amplifier. WiiM is set to 100% direct volume out and Marantz is set to direct. Streaming Spotify. Occasionally I have no left channel for the few first minutes of a track. The WiiM channel balance slider has no effect. Because the amp is on direct it’s not its balance either. Room EQ is on and I haven’t done any meddling with much else. I realize there are many variables to consider and means of testing. I have done some of them. Different streaming services etc. Swapping cables etc. However I thought I’d ask if anyone were aware of any issues?