Knitting cable help

I basicly designed my own scarf pattern with a right slanting 8 stich cable in the middle but one purl part right before the cable is even but the other side is super loose can you help me ? :XY:

The only thing I can suggest is to pull those stitches tighter as you knit them, especially as you go from your cable needle back to the main needle. Really snug up that first stitch after the cable.