The pattern provides a lot of details and charts but the calculated st increases have been off. I would consider the increase counts more of a guideline, I would recommend doing a little math before starting a rnd.
I started with 156 fdc to get the pattern on rnd 2 to fit nicely(you need a 6 st repeat). I ended up with 26 tr increases on the 2nd rnd, and needed an extra 12sc on rnd 3 to get the 224 sc count. The pattern is progressing closer to the directions after the first few rnds.