minimatica Pics on home page

Hi, I cannot seem to get the pictures that I have in my posts to be centered on the gallery view on the homepage. I have tried resizing the images after setting them as the featured image in the post. I have tried different alignments left, center, etc…

Does anyone have any ideas?

Please look at what I mean.

http://www.jawzwebcreations.com/waynesvending

Thanks