I printed them out, except for corner2. Maybe my brains just not working right, but I can't figure out what corner1 and 2 are for.?..?
You were absolutely correct about printing them smaller, although printing them to fit the page gives me hallways and such that are big enough to fit a Volcano BAP through!
I discovered that my Mom's printer (or her version of Adobe Reader, which I updated) doesn't allow changing the print size by percentages, but printing them in Booklet mode seems to have worked. Tile 23 came out at 135mm a side (5-5/16inches).