I need to reduce the font size in the print view and maybe change the font (using the print button in an article) but i can not loacate a print.css file. When looking at the code in firebug it appears to be pulling the font sizes from the bootstrap.min.css file. Can I edit this without any issues?

Hi there,
1.) Please do not edit the org files, these files will be overwritten with template updates
2.) If you want a special print.css you can add the print.css into the file > layouts/theme.php ( See image attached)

<link rel="stylesheet" href="templates/jp-scene/css/print.css" type="text/css" media="print" />

Dont forget to create a print.css file and copy this file to your css folder

Problem solved.