Dave, You brought up 'the baffle trick', I looked that up and found a wealth of information. It was mainly back in 2012 and I'd be interested in asking the participants in those conversations what was learned in the end. The baffle mod was there, sealing the secondary air feed box, somehow improving the primary air, better insulating the fire box, stuff like that. Brother Bart at the time didn't seem to be fired up about the efforts and I was just wondering if any of those ideas turned out to have merit.