I have a GE gas stove top. One burner refuses to light (or takes forever). When I turn the knob/dial to the 'light' setting, I hear the clicking noise. I believe that is the ignitor arching/lighting. But the gas does not come through. I have to turn the dial back and forth from one end of the dial to the other. Eventually, the burner will light, but it might take several minutes.

I have 3 other burners, that light up immediately. Any, clues?