I finished the shoulder/neck shaping the way that you instructed and I did it correctly. My question is: When you bind off in a row along the shoulder and then knit or purl the rest of the way toward the neck or shoulder, there is a bump transitioning from the bind off to the knit. And in the middle of the shoulder line, where the final bind off occurs, there is a small ridge. I thought that according to the pattern there is a line from the shoulder to the neck that is a slight incline, which doesn't match the slight incline in the middle of the shoulder line that I completed. Why the difference and will this weave together nicely with the front piece?