You know these seals that stick in the rockerboxes in order to seal the covertins!
The shipments(3 times) i received from my supplier were ALL too small in external diameter, if they were built in , completely with the rocker, there still was a gap of maybe 1/32''on the outside.
The latest i got looked like the originals, same shape,coated with graphite powder, but also:TOO SMALL.
The old ones that came with the complete James gasket sets fitted ok!My supplier says these are James too, i ordered them separate, so i cannot check it, but i believe him.I installed NOS ones i could lay my hands on, and they fit fine.
The major set back of course is that some guys that didn t follow the vacuumloss stories in this forum, maybe install these bastards, with result one oilspraying knuckle again!