Smoke from breathers.

To some extent this is the purpose of having breathers - to vent these crank case fumes and gases. a bit of smoke coming fromt hem is not uncommon. If you are also running a PCV as it sounds with dual breathers and still wetting down your engine compartment it does sound like too much blow by. If your leak down numbers look reasonable you could go to a vacuum system to pull vacuum on the crank case or try a simple header evacuation set up.