I have an older Roper gas stove/range. We are getting a "hot" or "burnt" smell coming from the stove. Can't really pinpoint where the smell is coming from, but am suspecting the stove. All of the range elements fire up quickly, but the oven does not. Checked the stove pilot light, which is burning, but the oven does not heat up. You cannot hear the "rumble' of the gas igniting as it normally does. This pilot light also is burning oddly.....it seems to start burning sideways onto what I think is the thermocouple, but then again, I DON'T KNOW WHAT I AM LOOKING AT OR FOR. Wife also mentions that when baking in the oven, she has to turn up the heat dial to get a proper tempature. For instance, if a pizza calls for 400 degrees, she says she has to turn the oven up to 450. What is wrong???? I turned the gas off behind the stove as a safe measure. Any pro's out there that can teach this novice something before he blows his house up?????