Print Layout on Published Paginated Report Changing Formatting

From what I have gathered, each renderer (PDF, excel, word) renders the paginated reports differently. While I was creating the report, I would run it in Report Builder and directly "print" to PDF to see if it looked ok, and it did look ok.  However, when I exported to PDF, it would not look the same. Since I need to publish this to BI and BI does not give the option to direct print to PDF (you must export), I resolved to just published it to BI each time after I made an adjustment and clicked export to PDF to see how it looked. Thank you all for your help!