All the pot burners need to be warm enough to evaporate the entering fuel .
On start up you have to take a peek at the flame.
If its yellow its burning the surface fuel, like a smudge pot.WAIT!
If its blue and NOT down in the pot chamber , you are set for the rest of the winter.
I was a dealer when the Singer valves got too expensive and they created their own metering valve.
I prefer the older Singer ,for numerous reasons.
The fuel used does matter,
Oil Metering Valves - Dickinson Marine | Fisheries Supply
https://fisheriessupply.com/dickinson-marine-oil-metering-
valves-replace...
Burning #1
diesel (stove oil) will allow 25% more
fuel, and burning kerosene will allow 50% more
fuel, to flow through a "D" calibrated oil-
metering valve.