As
@The Hangar said, you can print plans at different scales using Adobe Acrobat Reader. I think the monsters are 185% of the size of the original planes.
The problem with printing plans at different scales is that then the slots won't be quite the right width, but the magic monster scale (that's not exactly 200%) means you can just double up the foam, and it will still give you a nice tight fit for an A or B fold. Some foams have double-the-thickness versions as well.