I am not sure if you have had any joy with the print size??? If you are still struggling I have a quick fix solution for you.
If you are using a PC with a left & right click mouse & center scrolling wheel, hold the Ctrl button whilst rolling your wheel forwards & your screen font & (everything else) will increase in size every time you roll. It works the other way too....roll backwards & everything gets smaller. I am sure there is another way to do it if you don't have a 'wheel-mouse', when I work it out I'll let you know.
I hope this helps, a teeny weeny bit?