Hi Stephen, that would of equated to you need a new engine cover on your next visit, only £160, there are no lengths to which these people wont go to extract more money from your wallet, who do you think pays for the spotless work shop and beyond Cr@p technician practises, many years ago my friend worked at a Ford main dealers and because he was new was put on fleet services, when he went to draw oil and air filters for the latest batch he was working on he was told NO, they only change them every third service and to just give the canister filters a wipe with brake cleaner to make them look new, this had the effect of causing multiple cam failures which the dealership replaced under warranty as Ford HQ was supplying the parts and paying the labour, Win/Win for the dealer.
Steve.