So I already have a Kindle 3g and Calibre works great for loading books. We got my son a Kindle Fire and now I want to load some books on it for him but I keep reading I need to remove the [PDOC] tag from the mobi format and re-convert. Will removing the PDOC tag make books not work on my Kindle 3G? Do I need to add/remove the PDOC every time I load a book depending on device? Thanks for more info
