I’ve bought Stove Chow pellets to burn in my Englander 25 PVDC for the last three years and have been satisfied. This year I bought 4 tons and aren’t burning as hot as previously. Stove is completely clean, I have a new convection blower, exhaust pipe is also clean. I have to burn on a higher setting, a notch or two, to get the heat I usually get out of them. Anyone experiencing the same? I’m in upstate NY, Hudson Valley region. Pellets purchased from Home Depot in mid November.