We’ll see how it goes today. Have boiled about 4-5 times so far with the new bubbler system in the flue pan,couldn’t see much bubbling action going on,still lots of nitre and syrup not getting lighter. Had it “ teed in “ to the pipe feeding the steam away,not enough air I guess. Disconnected the pipe and hooked up to the shop vac,,voila,looks like the pan is boiling with no fire. Will permanently plumb it outside after the season if it works how I think it should.