Been burning for about a month now and have noticed the hottest area on my heritage is not anywhere on the top, but quite noticably on the side opposite the side load door. Can't monitor the temp there but most definately the hottest. Some brown discoloration noticable also on a couple of the stone panels. This side of the stove stays a lot warmer for a lot longer than anywhere else. Anyone else notice this? Why would that side of the stove be hotter than the top? I have the Condar Medallion thermometer on top of the stove and have reached 300 maybe 350 so far. Flue temp has maxxed at maybe 800 but haven't loaded her up yet. Is the brown discoloration abnormal? Thankx