Hi there, I’m new to knitting, in fact I’m just about to finish my first project. I’ve done a stripey bag, and I finished doing the straps - 130 rows of stockinette (12 cast-on stitches). When I finished them and set them out to attach to the bag, i found they are two different lengths. I’ve counted them both out (twice) and they both have 130 rows. One is about 10 rows long. Should I rip out the extra length in the one? After the bag is assembled I’m going to felt it. Also, after completing the first one I noticed my edges were messy (just on one side), on the second strap I slipped the first stitches, and that’s the one that ended up shorter. That probably has something to do with it, but can the problem be corrected without having to knit a whole new strap?