I have a 2005 Avensis estate (2.0 VVTI). Without wishing to be too specific (!), the hexagonal rod adjuster (6 inch rod) on one of the lower control arms (about 1 and 1/2 feet long) of the suspension on the REAR wheel (LH) has been reported at Service as "extremely corroded". I have been quoted £350 for a replacement (dealer), the reason being that the arm comes as a "kit". I stuck my head under and this hexagonal rod bit of the arm does indeed look quite badly corroded - to the extent where I a