Alignment of Shirts

I have odd gaps in the spacing of the shirts, along the row. Some rows only contain one product, but aligned to the left.

Here are some links that don’t work well:

http://unlimitedclothing.org/?page_id=42
http://unlimitedclothing.org/?page_id=28
http://unlimitedclothing.org/?page_id=26 (that one is almost correct…)

The ‘Vegas’ category looks fine:

http://unlimitedclothing.org/?page_id=40

Any thoughts? Thanks! Love this plugin!

https://wordpress.org/plugins/wp-spreadplugin/