I'm confused. Let me elaborate more and maybe the full pic will come into view.
After I've picked up those live stitches, row 1: k17, Join second ball of yarn. Bind off 30, k17.
What i did was join that second ball of yarn after the k17. Taken that second ball yarn and bound off the 30 sts and k17.
Row 2: purl.
I purled each side separately with each ball.
Now the row 3&4 dilemma.
Does that make more sense or did I do it wrong?