[Healeys] oil pressure (again)

[healeymanjim at hansencc.net]

still trying to figure out why this bt7 has only about 30 or so pounds of oil pressure when it first starts and goes down from there.  the engine was rebuilt and has only about 1000 miles on it.  according to owner, it has always been that way.  most oil pressure ever seen was about 45 on cold mornings.  we have eliminated as problem area the filter, rocker arms system, the pressure relief valve, the indicating system, and oil pump.  i am beginning to suspect a major leak inside the engine, either from crankshaft (we are going to plastigage each journal) or possibly a hole in oil gallery somewhere.  any thing i might be missing?  TIA  hjim