New crate motor woes

I've neer heard of that test. A leakdown that shows good, where the rings are washed? BS. If it seals air from a compressor, the rings seal. If they dont, it will show immediately. Any pressure in the crank case could be a problem. From rings loosing their seal (it's really pressure that keeps them on the walls, not tension) to gaskets pushing out, it's bad. That being said, there's always a little pressure, especially as rpms climb, and the PCV helps alleviate that. As do vaccum pumps on race engines. So with them both blocked, I can see where the 1psi comes from. In any case, driving the car tuned properly I think goes the furthest to getting it squared away.