So, you’re having a catch can oil issue and recently changed catch cans?Cams are MMR Stage 3's. Vacuum is about -6 to -7 inches at idle. On decal in might run to -11.
More info. I had switched catch cans a few months back when the Sheby snake engraved was offered by I believe JLT. It catches much more than my old Watts unit, which only showed a small bit in the cup.
But it shouldn’t be a part that causes this, just its catching more you may have missed before?
I’d also just swap the PCV and move on.
-J