Errata:
Section 1 Rows 4 and 5 should be:
Row 4: slip 1, p1, k1; repeat from to last 3 sts, p3

Row 5: k1 (both yarns), main color k1fbf, p1, k1, p1, drop next stitch and ladder down two rows, pick up the main color stitch from Row 1; repeat from to the last 6 sts, p1, k1, p1, k2tog, k1

Section 2 Rows 9-12 should be:
Row 9: work Row 1 (of Section 2)
Row 10: work Row 2 (of Section 2)
Row 11: k1 (both yarns), main color k1fbf, p1, k1, p1, slip 1 wyib; repeat from to last 5 sts, p1, k1, k2tog, k1
Row 12: slip 1, p1, k1, p1, slip 1 wyif, p1, k1, p1; repeat from to last 4 sts, k1, p3