Jonathan,
Thanks very much. I will follow your advice. I also have a 2012 M3W which has been fairly trouble free other than the belt issue and a fuel pump which recently failed due to the internal tubing cracking. Have replaced pump and only left to put in new fuel line as one of the quick connectors failed.
I also have a 1958 +4 which I have owned since 1972 and a 1986 Fiat Twin Cam +4 bought new from the factory and kept in UK until 2012 when I brought it over here.
Thank you again for your help. I will email Graham now.
