Ken; I know you are a major alternate reading software zealot, but, I hate to say it, not every request to read PDFs or ePubs warrants a suggestion to use Koreader.
@Elaxon: You won't get much (if any) discussion here on converting from PDF to other formats. You could either ask in
calibre | Conversions (but this presumes the solution to be calibre),
Workshop or
PDF.
Also do see
Read this before Posting PDF Questions in the calibre | Conversion forum,