I live in Mexico so my oven was hooked up to a propane tank. Everything worked fine until I moved. After I moved the range was again hooked up to a propane tank and it did not work the way it did before. I turned on the oven to bake something but the oven temperature only went to 150 degrees. I turned it back off and back on again, it went to the temp I wanted (350 degrees), but 45 minutes later the temp had gone back down to 150 degrees and my food was only partially cooked. I also had someone come and check out why the light would not come on. He got that to work, but when he turned on the oven to check why it would not keep the temp the oven light would not come on, even though the bulb was good. Does anyone have an idea why all of a sudden things don't work right?