Let's say I have an e-book that needs editing, mostly because the formating is screwed up with incorrect line breaks. The e-book's file format is azw3. Let's also assume that I can convert to and save as a plain text file. Kindle can read plain text files. Yet the crazy formatting returns once I open the plain text file on my Kindle. Converting the txt file to an AZW3 file does not result in a better result. The first two chapters had proper line breaks, but anything after that was again riddled with incorrect line breaks. Why do these faulty line breaks occur?