Solutions have been provided but I want to encourage you to press on and not give up on this quilt. It is a rare quilter that has not had to face this conundrum. That is why you got some good solution ideas. https://cdn.quiltingboard.com/images/smilies/wink.png Been there and done that.

Wavy Quilt top II
 

Thank you everyone for your most helpful suggestions. I did not give up on my quilt. I did the large running stitch and pulled slightly and did replace one of the diamonds that I felt was too stretched out! I now have it sandwiched together and am trying to figure out how I want to quilt those diamonds!! I'm also waiting for my 'quilt in a day' scallop template.
I appreciate all your encouragement!

That's terrific, Nanscan! Best of luck to you - it's going to be a pretty quilt! :)

Tartan is right on about how to help this bias issue. Pay close attention to the stitching as you go around use a nice loose stitch.

I'm glad it all worked out for you. Working with bias edges can be a real challenge.