Hi ​@dantinnes 

Welcome to the Sonos Community!

Sorry to hear of this issue you are having with missing tracks on YouTube Music.

In what context, please? Are these tracks that you have personally uploaded to YouTube Music, or tracks on YTM that you have added to your own library there?

Or, perhaps it is a playlist and not all tracks are added to the queue? Is it a YTM playlist, or a Sonos playlist?

Please give as much info as you can, thanks. If a screenshot would suitably demonstrate this issue, please include one.