I followed these steps, but when I click "edit" under invoice or estimate, it opens another window.  This window has Desgin, Content, & Email settings... nothing regarding print settings.  

Edit... I found it under Design.  But, it doesn't work!  Moves up a bunch of the text, cutting off the top of business address & logo, and STILL doesn't line up with the envelope window.  Honestly, the more time I spend in QBO, I realize how underdeveloped it is from Desktop.