I bought my Jotul around 1992, since then I have had to replace 3 top baffles and I think I did the back burn plate the 1st time w/ the 1st baffle. I am now looking at the 4th top baffle which looked good a few months ago in Sept. Thats about 1 every 5 years. I may have need the back plates too over the years, not sure. Is this Normal? Why would they bend? Don't they make them to take heat? I have replaced the cat once and looked when I cleaned it a few months ago. It works ok, do I need to replace it?