Mini Vox on Moca loses connection to Bolt and OTA DVRs

Had an older Mini which worked like a charm for past 3 years, using Moca network. Never an issue w losing connections. It suddenly died, and was replaced by TiVo with a Mini Vox. Installed and setup fine, using Moca and existing coax wiring. However, every day this Mini loses connection to the Bolt and then cant access the other OTA DVR. I go thru the Clear, Delete Everything process, hard rebooting several times, to get it back online in a reasonable timeframe, but its clearly a pain. Network status shows -6.0 tx, -49 rx routinely with Bolt, OTA and other Mini peers. Any ideas how to stabilize this?