Greetings. This model has 4 burners.The 2 left burners spark ok but the 2 right burners do not. I switched the wires from the spark module so that the wire leading to the left burners went to the right burners and the wire going to the right burners then went to the left burners. The burners on the left still sparked and the burners on the right did not. Also the front left burner control knob must be jiggled on occasion to spark. Which part do i need or what else can I do. Thanks. Jim