Page dimensions are changing in word 2003

[OldFashionedOutlookUser]

I have a 200 page document that is made up of one table with three columns. When I print any page, the table as it's printed on each page only takes up about 3/4 of the upper left portion of the printed page. In Print view on my screen, the page outline is wider than normal. If I open a new document, the page width looks normal but when I cut and paste one or more pages from the original doc, the page suddenly widens. The document is set to Portrait, and the paper is set to letter 8.5 x 11. Yet this table is forcing the page to be unproportionately wider. The table stays the proper width and the margins are as they are in any other document I print, .5 all the way around. I've checked all settings I know of and everything seems normal yet this table is forcing the page with to change.