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
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