This is from my Regency I2100 I purchased used for $250. As baffle kits (2 fire bricks) are about $50, I'd like to avoid replacing the baffle bricks. Pictured is the "worse of the two". They each have a lip where they fit together, this one is 80% gone (along with some of the corner). Think I need to replace it? Can I get 1 year out of it?