I see on the MB service disk:delivery valve holder (35nm), compression spring and copper seal (replace),delivery valve (rinse in fuel),delivery valve carrier (make note of installed position), O ring (oil before assembly). Does this sound right? Is there a kit to rebuild this section of the IP for all the seals? Or should I repair only what is necessary? I'll take a look at Phil"s page to see if some answers and costs are available.