A family of Microsoft word processing software products for creating web, email, and print documents.
A few months ago I read this MS support article: http://support.microsoft.com/kb/211432. I've been looking for it off and on since I read your post, RMJo. I just found it. It tells how to prevent "Word from moving the main document text (downward or upward) when the header or footer gets too large to fit in the margin" space. Look for the section How Headers and Footers Affect Margin Settings.
I thought it might make the page work with a table watermark, and it seems to. But, of course, you have a good solution already.
Pam