I have an old GE range. Model # J BP26 0w2A. It came with the house when I bought it 16 years ago. Last year I replaced the bottom heating element. This saturday I replaced the broiler element. After that the oven doesn't heat at all. I suspect it is the temperature control. The question I have is that there are two tubes. A thick one that is along the left side of the oven and a thin metal tube along the back, right against where the broiler element enters the back wall. Both enter the oven from the same baffle. I had to move the thin one to replace the broiler element. Nothing broke as far as I could see. Which one is the capillary tube and what is the other one for.