On my gas oven, everything works except when using the oven in it's normal mode. In self-clean the ignitor glows etc and the gas ignites. But when I move the lever from the self-cleaning back the ignitor is does not glow. So I assume it's the self-cleaning switch or circiutry. So does any one have a circuit diagram? How can I get to see this lever in action, or ideas on how to fix this.