I have just purchased a Grandpa Bear and need some info on this wood burner. It has a rear outlet for the flu. I can not see any where that it has had a baffle. I saw in some other form, someone had installed a baffle system, but it did not have any measurements on it. Do you need to have a baffle with this stove? I talked with a local wood burner and he said that they all came with them. Not sure if this is true. Its in very good shape and I would notice if someone had remove the welds where the system would have been. Any help would be great. Thanks, Joe