Well reading this thread I thought leave well alone,but by the time I had finished I thought well for the cost it is not much after all it is a Mercedes and lets face it we do not start to blink until the bill is around £500,so a relatively cheap repair/renew job and in better weather not to hard to complete ,so go for it,if nothing else we might get a thread about how the op spent a entire week end trying to remove a sheered bolt