I bet the sealant you added to the covers and breathers will help. You likely have more oil up top now since your not oiling the lifters anymore and that might be splashing its way up. Mine leaks oil from the breathers after a pass or hard run and I just wipe it off and roll on lol. It leaks down average of about 2.5-3% so I am not concerned its a blow by problem.

Now the big question, what did it run with the new setup?

Clark