If you have good compression then I think that you probably overfilled the oil pan.
Only hook up one PCV to the intake manifold/valve cover for evacuating crankcase fumes at idle and hook up one breather to the flame arrestor/valve cover for evacuating crankcase fumes above idle.
I am sure that using fast moving exhaust gases to evacuate crankcase fumes from the crankcase is a little better than using the flame arrestor but I wonder if that isn't a little overkill considering how much work and expense that would be!
Mercruiser High Performance big blocks don't use exhaust gases to evacuate the crank case fumes and they seem to work just fine!
Sincerely
Dennis Moore