Any using these pellets this last season notice that they are burning weird ?? I'm really good about keeping my stove clean as I have had a pellet stove for 9 years now. I noticed that when burning them this year they don't break down in the pot as much and create the fly ash that is normal. I look down into the pot and they are glowing red, but are not dissolving into bits. I guess this is the only way I can explain it. So after about 20 hours of burning, the pot gets about 2 inches of these at the bottom. Where normally they would break down and turn into fly ash and fly upward into the box. Anyone else experiencing this with the Pro Pellets this year or at least noticed that they are different ? Ty...