What I'm calling the control valve has been referred to by other people as a shutoff valve. Basically, what turns the gas on and off. Opposite the end that leads to the regulator is what I believe to be a overpressure valve. Mine is covered in blue plastic. It's just a plastic cap. This is where the propane appears to be leaking. Now that the temperature has cooled down, it has stopped leaking. I'm guessing because I just had a fresh fill up that the propane expanded in the heat, and perhaps caused this valve to open. That's my theory at least, was just looking for some confirmation. I guess if it goes away as I start to use propane I have my answer too. Meanwhile, I am plugging in my propane alarm in the garage.

Troy