I bought this Jotul 600 Firelight used about four years ago and it's never run right. I'd like to see if I can't get it going the way it's supposed to. The pilot stays lit and when I push the on/off button to on, the fire pops up okay. But after about half an hour or so, it just dies. What could the issue be? Some pix are attached. Also: The log setup doesn't match anything in the manual for the stove, and it's too complicated for me to figure out without help. Can I just stack em like I have em or should I call some 4rth grader over to puzzle them all together in about 10 seconds flat? thanks!