Infinite scroll issue with products/images

I am trying the free version of infinite scrolling to test if it will work for me. I am using the Woodmart theme. I can get it to do the infinite scroll, but some products (right after the infinite scroll) are extremely large and just 1 in a row (rest is 3 in a row). I cannot get them to normal size. Weird thing is that it’s just a few products that repeat as well. Then it’s back to normal for some products and then a few large ones again after new page starts. Any thoughts?