Have you washed the quilt? Sometimes when it crinkles up a little bit, things just disappear. It's worth a try.
The one time I had a wavy border, I actually put a pleat in my extra fabric and used the long arm to stitch over the pleat, maintaining the pantograph pattern. After the quilt was washed, you couldn't find it.
I don't know how I have been that lucky, because I don't do all that measuring 3 times, averaging bit. I do stretch my borders, just a very little bit, so they don't end up too loose.
Last edited by Barb in Louisiana; 11-12-2020 at 03:51 PM.