I have a Hunter 326 with a propane stove/oven. The system has a regulator and solenoid. When I turn on any burner it lights right away, but then after 5 min it begins to die out. It then will not relight, and has no gas. After a few hours it will light again, but then goes out. I have noticed that the solenoid gets very warm, almost to warm to touch. My propane tank is full, and I have no leak detection safety system. Can any one help?