It depends on WHERE you bought your Robert Kaufman Kona cotton. If you bought it at a chain store, you bought 2nd quality fabrics. I buy my Kona cotton at major quilt stores such as Fabric Shack or Hancock of Paducah. Fabric manufacturer's sell fabric that are not up to quilt stores standards on the secondary market which mostly end up in discount chain stores. Unless you see the original Robert Kaufman label on the end of the bolt, most likely you are looking at lower quality of fabric.
Love your quilt. Great selection of fabric !!