Hreck, just my luck I looked at my burner set-up and my problem burner was seated properly. When I manually light it, the flame is as true as the other two that light off when the piezo igniter engages. Whats troubling is the spark intensity is as intense on all three burners. The only thing I can figure is the propane gas is somehow not getting disbursed in sufficient quantity near the point of ignition, in that burner to allow the ignitor to light it up, yet when lit, it burns evenly around the circle. Still has me stumped.