The guy i got it off (dads boss) used it every day to go to train station and back (couple of miles or so) and it was garaged the whole time he owned it (it was only a couple of years when he got it). Its been regularly serviced although this problem was not mentioned by anyone.
In regard to the suggestions, are they very labour intensive? I dont have a garage to work in although there are some good workshops nearby. Also, i'd rather pay to have it done by a mechanic than do a boj job of it myself.
Thanks for the help.