Hi,
I have a generator with the same controller and I have the same issue as you. But I think that is a limitation on the generator controller. On InteliConfig it says that power values have 0 decimals.
Can you doble check if the fuel and oil pressure values are correct for you? For me InteliConfig reports 79.3% and 1.9 bar in the fuel level and oil pressure fields while VenusOS reports 793.0% and 1.9 kPa respectively.
Maybe @ptrenz can confirm if this is the case for the power values and double check this scaling inconsistency.
Also I think it would be nice to allow decimals on the fuel tank capacity. My generator has a fuel tank of 77.5 liters.