Preview's default Page Setup

[WHBA]

In my office, we use an 11x17 sheet size for many of our prints, but it is tedious and frustrating to deal with Preview, as it takes any PDF it opens and changes the page setup to scale it to fit onto a regular letter-size page. Even if the original application has the page setup correctly configured as Tabloid or 11x17, and the output Postscript or PDF file actually includes the whole page's worth of info, Preview still applies scaling to it to ensure that a Letter-size sheet prints out.

Is there any way to change this default behavior? As things stand now, I have to manually click on Page Setup and change the scale every time. And even if I Save As after doing so, the next time I open up the same file, I will have to do it again. It isn't handled in the Preferences for PDF Viewing, because I do have that set to 100% and not Automatically Resize.