Hi guys, I was just on YouTube watching an instructional video series by Lucy Neatby about cabling. In part two of the series she shows how to neaten the left hand edge of a cable. This side of the cable is looser due to the way the yarn travels from knit to purl. She shows how you can remedy this by reverse-wrapping the first purl stitch after a series of knit stitches. You then have to treat that stitch differently when you come back to it by knitting into the back of it, but it's an amazing little tip for tidier knitting. I think the same process would improve the neatness of ribbing as well. Click the picture below to be taken to the video if you'd care to have a look. Hope you may find this helpful!