Leak Down Test On My New 418 Need Help?

All this nonsense about the rings not being seated is just that. Nonsense.

The rings should have been in by the first time it hit running temp of before.

AJ is correct...where is the air going?

Anytime you have a dipstick blowing out you got ring trouble. IMHO, if your rings ain't in by now, you can't fix it unless you take it apart.