Resizing ONLY additional image thumbnails?

I've looked through the forum, and if I am missing an answer that's already here I apologize.
I am wanting to resize my additional image thumbnails...yes, I know I can do this through Admin by resizing small images, but that also resizes my sidebar images which I do not want.
Ideally I'd like a small row of additional images below my main image instead of rows of large images at the bottom of my product page.
Any ideas or suggestions?

I'd like a small row of additional images below my main image instead of rows of large images at the bottom of my product page.
You will have to re-order the items in a copy of tpl_product_info_display.php and tweak after that with your css/stylesheet

Right...I get how to move them images, just not how to resize them.
Any suggestions there?

just not how to resize them
You will have to add custom inline sizes to the src in the file