Intake Oil Leak

was the intake from another motor? wondering if it had been previously milled. the only thing i can think of is that the intake isn't square cross ways. that migh explain the high spot and why it still won't seal since even after maching its just pulling and twisting to the other side when you torque it down. if you have another intake you could torque it down using just some thick paper gasket material and check the contact pattern.