Does anyone know what the crack is with this coz mines really slack and my bonnet only just opens. I want to get it sorted before it stops working altogether. I've noticed on the slam panel what looks like the adjustment part? Can someone tell me which way to move the 'grommet' along the teeth to make the cable tighter. I've tried both directions but didn't notice a difference in the tightness of the cable. Also, how easy is the cable to change?