for those who don't know, CB now has a stainless steel aerator (stirator) paddle that they are testing right now, should be out soon, cost expected to be about $120. for those who burn pellets mostly, CB is working on a kit to add a fire extinguisher to the Maxim, it connects to the boiler drain and when the temp in the upper auger gets to high it dumps boiler water into the upper auger. I got rid of my lower auger jamming problems by turning the upper auger ratio down one notch, since then I have had no pellets in the drop every time I check it. I now can put "spoiled" pellets in my hopper (1 bag to a hopper full) with out getting any jams. My dealer told me he had one guy who had a hopper fire last year, after they replaced the gaskets he used it for heat the rest of the season before sending it back to CB for a refurb.