abdr500 - I'll trust CTS for now matey, as it's cost three weeks and £250 to get it look at this once. I know it's always better to get a second opinion, but attempting to resolve this problem has cost me well in excess of £400 now, which doesn't sound like much, but in the grand scale of things (i.e. turning a 1993 Fiesta into something special, which costs relatively little when considering the modern cars it outperforms) it is a lot.