Even though I weighed the finished first sock and the remaining fiber and so determined that I should have more than plenty to knit another sock just like it, this happened.
I guess I was in such a hurry to spin the yarn for the second sock that I spun it a little thicker. And even though I had 1/2 oz. extra, I still came up short. Which led to this:
I still need to cut the cuff off of the first sock to match and redo the cast-on/off for both socks. You know, after one more row of this: