Modbus connection to Comap genset Controller

Evening all.
Scratching my head a little trying to setup my genset with cerbo.
Previous gen start was with 2 wire start from relay 1,
All worked fine and as expected, GCX displayed generator power supplied and AC load all as single phase L1 (genset is single phase)

Here is my current (new) setup:
Cerbo GX updated to 3.50, Ethernet connection to LAN and internet.
ComAp intelilite4 AMF9 controller in genset, Ethernet card installed and connected to same LAN as cerbo and firmware updated to latest.
Multiplus inverter on VE network with CGX.

ComAp Modbus registers modified (as per CGX documentation)

Communication is happening, remote start is working, fuel, oil, temperature is all reporting correctly.

However on CGX and VRM, the Generator and AC load are showing 3 phase, L1, L2, L3.
Only L1 has a reading.
Also the power reading coming from Modbus are in KW and seem to be non decimal, so let’s say it was kicking out 1.6kw, this displays as 1000w and doesn’t change until power is over 2kw then it displays 2000w.

Has anyone else experienced similar, or know if I need to use different Modbus values?

Thanks
Tom.