Gerry - another thought, this time pertaining to the excessive crankcase pressurisation. Assuming that Pat's suggestion of rings maybe upside down is false, what
oil have you used from day 1?
If you have used a
synthetic, could well be that the rings have not bedded in, would advise a dinosaur
oil like Valvoline racing 20W-50 (non synth) for 5000 miles at least to bed the rings.
Although I never had a crankcase pressurisation problem on my engine, it did take 5000 miles before it stopped using any
oil (and hence completed ring bed- in). Even so, it never puked any oil like yours is doing, so I would supect a more major issue than just that.
Luck in your pursuit of a well-behaved engine.