Originally Posted by Ingrid
p2tog, k1b, yo, p3 shouldn't increase a stitch.
You're purling 2 together, knitting one through the back loop, yo, and p3. The p2tog and yo cancel each other out.
Maybe you read k1b as k1f&b (which would be an increase)?
I'm reading "k1b" as "knit one below"... which also shouldn't
increase but I can see how it might. Then again, my pattern reading can't be trusted, so somebody really oughta check me on that.