Messed up .pdf

I've recently created a "Snapped PICAXE" Instructable => that's otherwise OK, but the associated .pdf is all messed up! Diverse images appear all over the place at printout, with consider wasted white space on other pages. This "may" relate to an initial version that's not been upgraded yet, but the 14 step Instructable itself looks pretty solid. Any ideas? Is it junk in my library ? Manuka