You know bill.... I cleaned out my hopper friday....and put in a bag of those Firesides that I got a couple weeks ago....and I think your right. That particular "JK" and the August date on it do burn cooler. I had to open my feed plate more to get the heat I wanted. I picked up 10 bags of Natures Heat from Lowes.....trying them.....they seem to burn very good .....and hardly any fines at all.[/quote] So opening your feed plate allows more pellets for the same burn rate? Then that would be using more to get the same heat, which is pretty much what I thought of them, so I'm figuring a not so good batch. JimmyD, - Be interesting how the bags you got turn out since they are from the same batch it seems. If you have a way of checking the heat output before you put them in.