This is the second season for this stove. It's a Lopi and we have a double flue pipe. Last night we woke up to the smell of paint and the temp gauge was still midway in the green so at the time of smelling it, the fire was not out of control. We noticed that the outer flue pipe is starting to fade and was wondering if we may have gotten the pipe too hot that would cause paint fade and a chemical smell from the flue pipe.