Got a trusted independent check it over. They said Seat were being overly cautious. Quoting me for work that didn’t need doing, yet. The bushes are worn, but not to the point of replacement. Obviously the whole arm does not need replacing, as the bushes are available separately. And the whole rocker cover and rocker cover gasket don’t need replacing either. They’re gonna price the work up they think needs doing, and get back to me