Hello, my Kitchen Aid Superba gas range is giving me fits. It is model #KGST307HBS6. When I turn on the oven portion of the range, my GFCI breaker trips. It is only when the oven is turned on. The cooktop works just fine. I thought maybe my GFCI had gone bad so I replaced it with a new one, and I still have the same problem. Any ideas? I would hate to go spend 2k on a new range if all I need to do is spend $20 for a part. Thank you.