I want a more robust baffle because I hate making sure my baffle boards are positioned correctly. I got a hot spot on the top of my stove because I made the mistake of allowing the gap in the center of the boards instead of pushing them together. The result for me was that just about the time the stove was hot enough to lite off the secondaries, there was one little spot on the stovetop that was pushing 900 degrees. This is an issue that I think I can fix. I have a sheet of ceramic fiberboard sitting here; I'm thinking that Saturday with temps approaching 60, I'll let it burn out and make myself a tighter fitting baffle.
I and others have solved this by laying a regular old arc welding rod on each side of the baffle. On the outside edge. This takes up the space and holds the baffle boards much closer together. The stove isn't perfectly square though so you will always be messing with them if you want it perfect. It doesn't need to be perfect.