I am about to make my third... no, fourth! attempt on the Redy sweater.
I started by trying 5 mm needles, hoping that my gauge would be a titch loose so I could knit the size small but still have some positive ease. The gauge was spot on as I was knitting, but when I stopped to block and check my gauge the sweater grew immensely!
My gauge went from 17 sts/4" to 13 sts. That is more positive ease than I'd bargained for! The cowl (which I was using as my swatch) would have fallen right off my shoulders.
So, I frogged it all and will start again with 4.5 mm needles.
It's worth taking the time to get it just right, I know. But it is always a little discouraging to rip out so much work!