I installed a dynatek box and open air intake. I also ordered the jet kit from dragonfire and it says to locate fuel mixture screw to proceed with adjustment procedure. With 5/32 drill bit provided carefully drill through the plug. Note the fuel mixture screw is directly beneath the plug, be ready to pull back on the drill the instant you break through. Use the screw provided to secure and remove this plug. Carefully turn the mixture screw clockwise until lightly seated, then 1.5 turns out above 5,000 feet. Has anyone done this and have more explanation on it? I am confused about this step and the purpose of it? Thanks