I am playing around with the Dark Uniform theme. Possibly going to make a switch to it. I started testing it in a demo store. Everything looked good so I created a test product in my live store. For some reason the image gallery on the more info page shows up extremely small. Once you make the required selections for the order options, the image gallery blows up to the proper size. Clicking on one of the thumb nails shrinks the gallery back down. This behavior did not occur in the demo store so it has to be a setting in my live store that is causing the issue. I tested in safari, chrome and firefox and the behavior is consistent across browsers.
You can see the test product at https://www.spaguyusa.com/cabotest.php
Thanks for any insight.