I also had to pick up extra stitches for the button band because of the changes.
My version has more buttons than the original.
I wasn't very careful the first time I sewed the buttons on and the center horizontal ribbing wasn't lined up.
So, I had to redo some of it today.
I still haven't finished the green twisted front sweater but I want to finish it before starting another knitting project. I finished all the pieces then realized that I had messed up the back and it needed to be redone. This kind of mistake usually makes me postpone for a while until I can get over the prospect of redoing work. But I'm back to it, in between sewing projects.