Ha ha ha ha. That's the only thing I ever used "Make it fit" for, too!

I assume you've tried the usual tricks -- increase the right margin by 1/4", switch to double spaced and a bit, increase the size of spaces between paragraphs and between paragraphs and headings (leading, IIRC), use 11pt font instead of 10pt (12pt if you think you can get away with it), increase the top and bottom margins by 1/4" or so, throw in some almost-useless footnotes that take up a bunch of space at the bottom of pages...