I really did not have a problem with blowby unless I was really hitting high rpm's. I would push a bit of
oil out of the breather. More of an annoyance than anything. It would eventually run across the valve covers and then down on the wires and, well, you know, a small mess.
Well I welded on a AN fitting to the valve cover and set up a remote breather. Got the water overflow to match. Dry as a bone.
Roscoe