I was quilting this in February, and had a lot of trouble with breaking thread. I tried every tweak I could think of, but doing these back and forth lines, the top thread would fray and break. After awhile I noticed that it only happened when quilting from right to left. I'd heard that was sometimes a problem, but I'd never experienced it before. I experimented with a row of figure eights, and then a row of swirls, and those gave no problems going right to left.
So on the second half of the quilt I switched to doing only swirls. No more breaks! Thanks to Angela Walter's Craftsy class, I figured changing quilting designs part way through the quilt was acceptable.
Linking to Crazy Mom Quilts for finish it up Friday.