Pattern changed because of decrease?

I’m still working on my pullover, and I’ve found the link for those who might want to see the whole pattern. Women’s Shaker Rib Raglan Pullover

The back, which I’m working on now, was mostly

RS row: Knit across
WS row: K1, *P1, K1B, repeat from * to last 2 st, P1, K1

No problem, it makes a nice ribbing. Then I got to the decreases. Here are the instructions I’m following, and where I wonder if I’m doing something wrong…

[B]All sizes: Next row:[/B] (RS) K3, Sl1, K1, psso. Pat to last 5 sts. K2tog, K3
Work 1 row even in pat.
Rep last 2 rows 23 times more. 55 sts

Note that I’ve removed the st info that doesn’t relate to the size I’m making.

I have no problem following the pattern, except that now the ribbing isn’t straight. The RS row is all knit, and at the end, I’ve decreased by 2 sts. The next row is my WS row, but with 1 st off, the “rib” is now off by one. Then when I get to my next WS row, it’s “off” by one again.

In your opinions, is this the correct way for the pattern to progress, or am I misunderstanding something? The picture is done in camouflage, so it’s hard to see…although the ribbing looks straight.

Thanks in advance.

For the WS row, you maybe need to start with p1, k1B to make up the sts. Just keep doing the k1B in the same column of sts, but adjust on the ends by just doing a single st instead of the k1,p1/p1,k1

I will probably end up doing that. I wonder if that’s what you’re supposed to do and they just forgot to write it?

No, it’s written in there… " Work 1 row even in pat." That means to work the row without decreases, in the pattern that’s been established. So if you have to fudge the sts from how they’re written st by st to stay in pattern, you stay in pattern.

Ok, good point! Thanks so much, that makes a lot of sense. Guess I was too worried about not changing anything, even though I didn’t consciously think of it.