Is there a way to get flue temp without a probe thermometer? Wouldn't I have to drill a hole into my very expensive double wall pipe for that? Can you measure outside temp with a heat gun and determine inside temp from that? I don't mind just getting a magnetic thermometer of some kind but a probe thermometer with already having smoke in the house issues makes me very nervousI hope waiting for a probe thermometer so they can figure out how to run their stove properly. Instead of jumping to the immediate conclusion that the stove needs modified.