YOUR picture of propane flame.....
Picture of a properly burning fridge propane flame
YOUR flame is anemic.....
either blocked burner slots
OR
low propane system pressure
LP Regs have vents.......
1st stage has a small pin hole vent and 2nd stage has a larger screened vent.
Both vents allow 'air' to move in/out of top of diaphragm as diaphragm moves to control pressure/flow.
Should be NO propane coming out of either vent unless diaphragm is torn/cracked.
Simple 'bubble' check....spray bottle full of water with several drops of liquid dish soap.
Should not be any bubbles are either vent or crimped body of reg.
Reg if not leaking may need adjustment.
Remove and clean burner and also remove clean orifice (soak it in alcohol then blow out with LOW pressure air)
