well, I guesstimate that all things I have done would have been close to £1000 in a garage with all the labour and extortionate parts prices. Everything I have done has cost me less thatn £300 including the Vat. Also as you mention I have learned a huge amount about the inner mysteries of the 300TDi. For instance I didnt know that the piston comes all the way to the top and practically touches the head and the actual combustion chamber is the strange shaped recess in the piston itself.