Fire two rockets at once

[MrGreezy]

I seem to have missed something and my P-51 will only fire one at a time. Looking to a shoot a pair with each trigger pull. What do I need to set the Bombs/Rockets panel to? Thanks in advance.

[Furious]

Black rotary knob just to the right of your rocket/bomb/off switch.

[MrGreezy]

Thanks!