Wints1,
Unfortunately, your approach didn't solve the problem for my environment, but thanks very much for the idea. I'm still working with Meridian support.

Hope to have something useful to post soon.

Living room: 818v3, Parasound A23+, Maggie 1.6
A/V room: 861v8, DSP7200SE L/R/C, 4x DSP320 surrounds, ID41 + Roon, UHD722, Prime+PS