Can I print at varying sizes or scale Simulink diagrams?

I've got this bit of code I'm trying to use to turn a series of Simulink diagrams into a postscript file.

for x=1:length(filenames)    
    open_system(filenames{x});
    print('-dps', '-append', ['-s', gcs],'models'); %Prints Diagram as Postscript file, appends to                                  series, and titles it 'models.ps'
    close_system(gcs,0);
end

The problem I'm having is that some of the diagrams are larger than 8.5"x11", but it only prints the pages at one size (8.5"x11"). Is there a way to print at a larger size or scale the diagrams down?