Thumbnail image spacing

I’m looking to fix the image spacing and increase the number of images that will display below the main image that the loupe can zoom on.

I want to add about a 10px space between the group of thumbnails from the main image, and add an even spacing between 5 thumbnail images that will go just below the main image. So the end result would be main image, 5 columns and then a even gap to the next row if I have more than 5 images.

I have included a link to the site:
http://epicartifacts.com/product/panzer-assault-badge-grade-ii-silver-grade-by-jfs/