I have a 6302A that I am going to rebuild however upon inspecting it to get a basic list of needs a couple things have come to light. 1) the top baffle in the stove has marks similar to what you would see with diamond plate wondering if this is a normal finding, the diamond plate like hashes are down, toward the fire box. 2) The diagrams I have seen for this stove show a rear liner...mine does not have one, it also does not have a piece sticking off of the back box like the sides do to hold said rear liner on. I have scraped the inside rear of the stove thinking that it must have broken off at some point (came with a house I recently purchased) without finding any evidence of a piece having been there, did there happen to be manufacturing changes at any time that would have made this normal? Thanks for the help, love this site.