First time user and not experienced at all, but not totally technologically illiterate either. I'm using Adobe Acrobat to compile students stories and want to publish in trade 8x10. I've checked and rechecked my margins and all seem to be within Blurb's print specifications, however when I upload it states I'm not and shows my size to be 8.5x11. If I have a one inch margin around all my pages, shouldn't I fall within Blurb's specifications of 8.125x10.25?? I don't know what I'm doing wrong and my deadline is within a day or two. Please help. Thank you.