Ockular Margins

Is there a way to set ocular to remember page margins?

I am using 4x6" thermal labels, and it ALWAYS defaults to 0.17" and 0.14" margins. This is incorrect - the labels only print correctly when I manually change them to 0"

I have checked /etc/cups/ppd/printer.ppd (printer.ppd being an example)

The printable area is correct in this file. The PDFs also print fine in the Evince PDF viewer.

How can I resolve this in Ockular?