I don't think I'm having a problem, but its got me thinking. I keep my Sante Fe feed rate where the screw is set in the middle of the slider if you know what I mean. I usually keep my stove on high since I have a whole 1200 square feet to heat. The flame is usually pretty good, hovering about 4-6 inches above the pot. I mean when I first start it up the flame is lower till it gets going more. And doesn't really have to do with the pellets your using ?? I'm currently burning Pro Pellets. But any suggestions or thoughts ??