My husband informed me that he'd been told that the insert is cemented in, so we'd have to demolish the entire fireplace and rebuild it. I love having a fireplace, and want to keep one in the house. I just don't like how this one looks. I guess for the time being, I'll have to live with it.
Thanks for the info on the manufacturer. I had previously tried to find contact information for them, but was unsuccessful.
Again, thanks!