Hi Ron, Thanks for your response. That makes sense. It looks like my theme uses the small 150X150 thumbs inside the post pages, but not on the index page.
The index page uses the second image option under Media Settings:
Medium size Max Width 300 Max Height 300
Can you use the custom meta field in SWT to bring through that medium sized image instead of the smaller default thumb? Or maybe the “featured image”? I think they may be the same. I read that earlier versions of SWT used the custom meta field to bring through thumbs, but I’m not entirely sure how to go about it. Cheers!