Excel 2013 :: Two Identical Files Print At Different Widths?

I have a series of worksheets (different workbooks) that have the same exact column widths and line depths. On screen the width and depth is identical but when printed, one takes up less width and more depth and the other vice-versa. Most (over 100) are just fine but every once in a while another is found that is distorted in print preview and printing and there seems to be nothing I can do to correct the problem. One difficult solution is to take the content from the "wrong" worksheet, do a save as on a "right" worksheet and drop the content in there.

Office and Excel 2013Windows 8Saving as different versions (xls instead of xlsx) makes no difference.Same printerSame monitorsAll worksheets are set to 17 pixels for both columns and rows (looks like graph paper)After setting up print area and viewing, the light gray dashed lines that show page breaks are different! The majority ("right") sheets have four fewer columns and four more rows than do the "wrong" worksheets.