This is the setup so far. Just in case I missed something. I had missed some of these settings with my first attempt:
VFO - 430 FM Data mode
Setup Connectors:
9600bps Mode (Default: OFF) Turn it on…
Connectors > 9600bps Mode (9600bps Mode)
Select whether to allow data transmission at 9600 bps,
or not on the [DATA2] socket.
• OFF: Disables data transmission at 9600 bps on the
[DATA2] socket. This is used for regular audio or
slower data transmission only.
• ON: Enables data transmission at 9600 bps on the
[DATA2] socket.
Connectors > DATA MOD’ is set to ‘ACC’
Connectors > VSEND Select’ is set to ‘OFF’.
Connectors > DATA MOD Level’ setting is at the default ‘50%’ value.