Venuta Booklet printing booklet with small text

I have created an A5 booklet in Pages. Two days ago I printed it out on to A4 and created a lovely booklet. I have since edited the text. Now when I print the booklet it comes out shrunken in the middle of the page. The booklet can be folded but it is half the size on each page. This is on Scale to Fit A4. I've tried Scale to Fit A5; the text is still the same small size but it moved over the page. In both cases I've tried with the scale button on and off but no luck. Printing in Acrobat or Preview has the same problem. I've tried pasting the text to a new document but with no success.

Is there some button in the Print Dialogue I have failed to turn on or off? I am using a HP Envy 6400