I have just had my oil filter and block, petrol pressure regulator, and petrol filter bodies bead blasted etc. I have also had the hoses and pipes around these gold passivated (coated). In doing so I have had to replace all the aluminium sealing washers. It has been a bit of a job measuring these and replacing them so I have made up a Table in Word (attached) which may save others some time. If it is deemed worthwhile perhaps someone might put the Table in the manual?