Tvheadend

I have TVH set up on a Raspberry Pi 3 with an ATSC USB tuner, and would like to connect to this device over the LAN using TVH set up on a more powerful "client" PC that can do transcoding, and can dish it out to devices on the network. I have the SAT>IP set up on the Pi "server" and the client TVH can see it, however none of the muxes are showing up. I have a feeling there is a network setting issue, however after searching these forums for help for many days, I'm still stuck. Does anyone have this kind of setup?