Pulled the crank out of the project engine on Saturday and it all looks mint, appart from the oil pump drive which is worn.
It seems to have tried to create some extra flats, i.e. looks like the original pump was a bad fit, so the crank flats have not driven the pump, but instead the corner of the flats have driven it and worn slightly.
Has anyone seen this before? If so did you do anything about it?