Ah so its not going to bankrupt me, i think ill get it booked in and tell them to only replace the adjuster if they think it needs changing. they told me recently that with the mileage my car is on (65K) that it shouldn't need doing but i'm not so sure. they also said that because my engine cover is not on it sounds louder than normal, but i think that was just a lazy diagnosis to be honest.
Thanks Mate