I love the quilt. Did the way the block lays perhaps cause you to press one of the seams to the white? I've done that already. Sometimes it just doesn't seem possible to iron to the dark without bumps. I've already pulled a block apart and ended up putting it back together the same way pressing to the white. But don't those things just Bug you? It's a beautiful quilt. The person you are making it for is very lucky. Good luck and press on!