If your sure thats the spot, drill a hole in the plug, it will be about a 1/8-1/4" thick, than there is some room, next is your fuel screw...so don't drill too deep. Once you have your hole in there you should be able to pull it out, that's what I do on my motorcycles which all get dynojets. These plugs are some sort soft metal, if you see brass come up your drill, STOP, you drilled too far. Only use of the plugs on the air/fuel screw is for emissions regulations