My front right burner ignitor won't spark. With that valve on the other 3 will spark. However, if I light that burner w/ a match it will start to spark, but not again if I try to relight. I have replaced the switches and that didn't do it. It happened right after my wife cleaned pancake crud off that switch with water. I feel it's the ignitor but I already started to play shotgun mechanic, and don't like doing that.