New-to-me 6600M and Multiflex sharing with myself

Hi folks,

I have owned a 6400 (non-M, s/n 1723-) for a couple of years - and I love it so much that I recently got a new-to-me 6600M (s/n 3318-). Paid for the license upgrade to v3 last night, upgraded to 3.10.10 (admittedly not quite the latest but it's what the 6400 is already on) and have been wrapping my head around trying to get one of my favored workflows working with the 6600M.

The shack is in the basement. The 6400 isn't even on top of the bench, it lives underneath, sitting backwards so the connectors are easily accessible, and I like to share it between SmartSDR running on a 1u server in the rack on the other side of the basement for digital modes (access via VNC) and a Maestro A on my desk upstairs in my office, for voice QSOs. That way I can listen to the usual suspects on 40 and 17 during the day, maybe join in, while JTDX is happily skimming whatever band I left it on and sending off reports to pskreporter.

Now I'm trying to do the same thing with the 6600M, but the difficulty is that Multiflex (maybe it should be called BiFlex?) only seems to support two simultaneous clients to matter how many SCUs or slices you have available - and the built-in Maestro that is on the front panel of the 6600M seems to be taking up slot 1 already, meaning that I can only talk to it with one client at a time. Kicking it off seems to momentarily work - but it looks like it's causing a reboot shortly thereafter.

Is there a way to make this work? Am I missing something here? Searching in the knowledge base was not immediately helpful, but I figured I'd ask here before opening a ticket. I figure I can't be the only person wanting to share a -M radio between two local clients on the same LAN and not use the front panel.