My Ashley20 is 7 years old. It's not putting out the same heat it used to so I am wondering about the cat. It glows, but only in the middle. The sides seem "cool." I burn from October to April with 24/7 burning from December to March. I've used mostly pine and fir since that's what we grow, but this year I landed some birch. When my cord is done I'll be back to fir in the remaining cords. So, it's either the cat, I'm thinking, or maybe the birch is not dry enough. I don't have a moisture measurer. Opinions anyone? See cat photo