I was slightly confused until you said "a couple of scoops on the bottom"... then it made perfect sense.<br><br>it's essentially the same thing, but there's less friction overall I suppose... rather than the screw moving against all the material it's just the outside slipping against it and the bits at the bottom shoving it up... but does it really end up being better?,(reply>)," Outside isn't slipping. You see it <a href=""https://www.youtube.com/watch?v=-fu03F-Iah8&amp;t=0m50s"">0:50</a>. I think the friction isn't significantly less", and the video never claimed this was more energy efficient, right, probably it isn't. The improvement, as they say, is the full flow (less air moved," accurate volumetric feeder) and less dust. They are placing too little emphasis when saying it. <a href=""https://www.youtube.com/watch?v=-fu03F-Iah8&amp;t=2m50s"">2:50</a> - <a href=""https://www.youtube.com/watch?v=-fu03F-Iah8&amp;t=3m40s"">3:40</a>"