I’ve illustrated the issue here in this short (30secs) video … Hook T Bug 1 - TechSmith Screencast - TechSmith Screencast
I think your band is masking the lower notes so they’re hard to hear. Perhaps you could listen to the melody in solo and see if the problem is still there.
To listen to a melody in solo you can open the bus mixer and click on the headphone button beneath voice one.
Please let me know if this helped.
Thank you Dennis - that was the answer.
Perfect! Glad I could help.