Thanks for the answer, but that did not work in the version I had used.
I had just modified the generated postscript files instead.
> Turns out, that the EPS save uses the Postscript output module, just
> with it's own set of parameters. So, if you printed the file using the
> postscript output, changing the values in that dialog. Then, you saved
> as EPS, it would use the settings you just set in the print.
> I'm not saying this is a good thing, but I'm pretty sure that will work.