Well, my lack of a temp gauge and my over-zealousness to get an extended burn (coupled with the relatively warm evening) created some creosote in my liner. It is fairly bubblely and not overly tarry, but it's ugly. What should I do now? Will it burn off it I do a little bit of a hotter fire next time or should I sweep it first? Or maybe I'm being a little too nervous since I'm relatively new.