well after failing to convert my specific book I googled pdf to epub & found this limited free offer:
http://www.pdftoepub.com/authorspromotion.asp
i registered as an author & got a key + download link - testing now...
oh well - that could not do my specific book either, though it worked on some other test stuff. it has a neat solution to header/footer issues - rather than grapple with regex you just drag sample image borders to crop the area from which you want text to be converted i.e. you simply exclude the header part of the page to eliminate it. That's intuitive & easy to do.
PS you get 5 free tries then it prompts for the activation key.