Questions Is there a way to assign a fixed location for each section in Report Designer?

Hi to all, 

Our PO report was showing the totals on each page, however, we want to leave the totals only for the last page.

 That's page one. The issue is, when I set the totals section to "Print on everypage: False" and "Print on Bottom: True",  the items go over our back image template lines: 

Then if I adjust the height of the section so it will cut where is supposed too, the totals go way too down and create a third page. So, question is, Is there a way of assigning a section height for the detail section? Independently if the totals show up or not below? Thanks in advance for your replies!