I am new to propane. I have the BBQ Grillware smoker that does not have a regulator at the tank, just the control on the unit. Is the control the same as a regulator? Someone posted that I should get a needle valve for the tank, is this correct? Would I be gaining anything by doing so? The smoker is rated at 15k BTU Next 2 questions are general and not related to the BBQ Grillware unit. On adjusting a propane burner, what would cause the burner to go out on non-windy days? Medium to high flame, tank 1/2 full. Also, black soot on 1 side of burner what would cause this? Any advice relating to propane; Regulators Burners Valves Low Pressure High Pressure PSI Etc...? Thanks in advance.