With Adobe Acrobat Pro, trying to print PDF images onto Avery labels (multiple PDF images per page) and need to adjust the spacing to fit the labels. Print options don’t seem to allow this. Has anyone had success?

I have a commercial application that can generate PDF images of barcodes.  Each PDF is small (½” by 1 ¾”).  So if I generate 80 barcodes, I get 80 small PDF images.   I thought about printing these onto Avery return address labels (Avery 5167), however when I print from Adobe Acrobat Pro XI and choose:

• File > Print
• Under “Page Sizing & Handling”, section I choose “Multiple”.
• In the “Pages Per Sheet” I choose “Custom…” and “4” by “20”
• For “Page Order” I choose “Horizontal”.
• I also select “Portrait” orientation.

All of this looks good, however in order to print on labels, I need to adjust the margin spacing. Adobe seems to select the spacing on its own, evenly spacing the four columns, but Adobe uses a different spacing value for the top, bottom and sides.   I have seen other posts where folks get into a discussion on “Margins” and Adobe not being a Word Processing program, but surely there must be a way to control how spacing is defined when multiple pages print on a page?

Thanks in advance…