Questions about Broilmaster P3 NG Valves/Burner

[Jay D in Jersey]

I've got the Broilmaster igniter working correctly and the flames look pretty good...maybe some fine adjustments when the weather warms up.
Questions: on high, valve knobs at the High position, the burner roars.
At the Low or 1 position I get pretty loud sputtering and often flameout on one side or both sides of the bowtie burner.
At the 2(Medium?) position it works fine with a slightly lower flame.
Is this normal? Can it be adjusted or fixed?

 

[LMichaels]

Is it an OEM burner or aftermarket? I have seen aftermarket burners (mostly on things like my dad's Genesis) behave this way. If it's aftermarket perhaps a little fine tuning but I have not ever been able to make an aftermarket burner behave as well as an OEM on any product

 

[Jay D in Jersey]

Is it an OEM burner or aftermarket? I have seen aftermarket burners (mostly on things like my dad's Genesis) behave this way. If it's aftermarket perhaps a little fine tuning but I have not ever been able to make an aftermarket burner behave as well as an OEM on any product

It is a Music City Metals original larger/ older style bowtie
about 8 months old.
Music City Metals 18782-74732 Stainless Steel Burner Replacement for Select Broilmaster Gas Grill Models https://www.amazon.com/dp/B005BW1SX0/?tag=tvwb-20

 

[LMichaels]

I would try touching up air adjustment. But honestly I have seen this on aftermarket burners. Just was using my dad's Genesis yesterday and it does much the same thing.

 

[Jay D in Jersey]

I would try touching up air adjustment. But honestly I have seen this on aftermarket burners. Just was using my dad's Genesis yesterday and it does much the same thing.

Thank you,Sir! Adjustment on tap for tomorrow.