So I have been heating 3000 square feet with the englander 28-3500 and love this stove. I went to clean it before I need to fire it up in a week but I noticed that the baffle was warped. See pics below. I have only used this stove for 5 years and I bought it new. What can I do to prevent this from happening in the future? Also I don't see anything else wrong with the stove other than the warped baffle plate. The metal plates that the baffle sits on look fine to me?