Okay,


Unfortunately i think the engine will need a strip down (sorry!), you are going to have to find the cause of low oil pressure. Whether that be too large a clearance between journals or bearings, something funny with the oil pump, even camshaft journal clearance.

It might be worth taking your crank back and getting them to re measure it for you, i can give you the minimum diameter.

Sorry mate, feel for you

Rob,