Hrm, maybe I've gone wrong then. When I did the row with the cast off in the middle, I was left with 9 stitches before the cast off. The stitches on the other side of the cast off continued to be worked to form the strap, then they were cast off. This still leaves those 9 stitches on my needle, the pattern says to add the yarn back in and knit those stitches for 6 rows before casting them off. Should they have a tail from the previous part? I can't see how they would as I had to use that to continue the pattern on the other side of the cast off! Very confused, but maybe this will teach me to read through the full pattern before I start something!