I have a Ford Sabre 2712E engine installed in a yacht with a MinimecCAV fuel injection pump, possibly model number P5128/3VS. IM GETTING SOME DIESEL INTO THE ENGINE CRANKCASE OIL AND HAVE REPLACED ALL INJECTOR SEALS AND THE FUEL MANIFOLD TUBE. I SUSPECT THE PROBLEM MAY BE WITH THE INJECTOR PUMP SEAL ( part number 993207) and am trying to find a source for the part. Can anyone help?