We have what I'm assuming is an older fireplace insert, since it came with our house and looked to have been there a while. It is a Forester brand, but no idea about model. I noticed last night that there is some rust on the lip above the doors where it meets the back plate thing. Here is a picture. I worried that there is some kind of moisture behind there that's making its way through, but can't figure out a good way to see behind the plate or if there is even a way for water to get through there. I don't think those parts come apart, but haven't pulled on it too much. Seems like a random place to get rust, but maybe it just happened that way? Thanks for any help or suggestions!