One burner on my 12 year old kitchenaid gas cooktop is getting no ignition spark. A couple of years ago when no burners were igniting I repaired the cooktop by replacing the ignition module (electronics) for about $100. I'm hoping the current problem is a bad electrode that can be replaced for about $18 but to prove it I'd like to swap two electrodes to see if the problem follows the electrode. However I can't figure out how to remove the electrodes. There is one visible screw near the center of each burner but removing it didn't seem to free anything. I'd appreciate a tip.
JT