I think there is a error in the pattern:
I have 150 sts and row 11 has the following instructions:
K5, P10 * increase (see instructions, page 77), P12; repeat from * across to last 5 sts, K5: 160 sts.
The problem in from 150 sts I am left with 15 sts at the end. Am I not reading this right?