Hello,
This is a general suggestion for all the PDF manuals. In Adobe Acrobat you can re-number pages via the Options dropdown in the Page Panel. This would allow you to synchronise the page number printed in the header of each page with the page number in the toolbar of the Acrobat viewer. That way, when someone refers to a page number in a forum post, people can just open the relevant PDF file, and enter the page number in the toolbar.
Andrew.