Recently moved house.there is a Smeg single oven installed with a Smeg 4 burner hob. The hob works okay but the oven has probably burnt out. Model No. Unknown The grill is in the top of 600 single Ben when used, the kitchen and rest of house fills with choking smoke. There are 3 rotating dials in front and some are difficult to read. Do I need to replace the oven. For convenience, I prefer a Separate grill from the oven. Can you supply an appropriate model for my use and rep?