Hi,
In looking at your listing, the problem is that you have all of the pics horizontal side by side. This stretches your listing out too far.
I believe if you will go into your template set up and change your pics to:
Alignment: Top
Group: Paired
Your listing will look much better. This will place the pics 2 x 2, and should cause your listing to fit into the page.
See if this doesn't correct your problem.
BroJames