Thoughts overnight...to those who have recently done this job, the end of the cable that goes into the backplate: there was a rubber washer fitted to the ferrule. Should that be outside of the backplate, or should it have been slipped forwards, squashed though the hole and slid back on to the ferrule so that it sits inside, between the cable spring and the backplate? When removing the old one, the washers had fallen to bits so not sure where they should be.
