Help! I'm a new knitter and as expected, I knit very tightly. I'm trying to figure out how to get the write gauge on #4 yarn. My pattern indicates 17 stitches in st is 4" but I have to use a size 9 needle to get to that gauge. Is that okay to do? Although the yarn is a 4, it doesn't look good when I knit with large needles. Help!