As I was cleaning the stove last night, I noticed a small space between the pellet feed tube and fire brick, around the bottom of the tube. In one spot in this same location, there is a little give to the brick. Behind the brick on the metal, I noticed a little discoloration that looks like it might be scorching. Has anyone with the same stove ever experienced that? I'm not sure how concerned to be about this but, just the same, I ordered new bricks last night. We have a real cold snap headed to New England tomorrow and now I'm not sure about burning the stove. I was concerned last week because the hopper wall seemed hot. I measured the temperature with a laser thermometer and, at my normal stove setting, it was around 150 degrees so now I'm wondering if its because of the brick.