thanks for the thoughts and comments gents -
abbyy fine did a good job of scanning the original scan of the book.. one problem though, is that, on pages that were left intentionally blank in the book (separators of chapters), abbyy has tried to read the other side of those pages, and came out with gibberish with those.
once the scanning was done and i had the page by page preview, i looked for some sort of option like "save as blank page" or similar, but saw nothing like this. is this more the realm of a pdf editor?
if i could blank out those pages which were originally just blank pages to begin with i'd have a pretty good pdf made from the original scanned book, abbyy seemed to've picked up everything properly, the original scan was quite good.