Hey Jason, I've come another issue related to this thread:
I am admin on a website that sells musical instruments. The images look fine on the product results page: products_results.php
But, some of them get squeezed when viewed on the product detail page like this:
Now, i figured everything would be fine since all my photos are uploaded with a 300px height. The changes i have made (with your fine help, earlier in this thread) should constrain by 300 height now. Why are some of these images getting squeezed? Any idea how i would fix this?