Stephen:
does the hose that enters the side of the breather come off the crankshaft vent?
Currently the crank case breather goes into the side of the bung that holds the oil tank cap, it is factory install. The breather is coming from a drilled and tapped oil tank cap going to a catch can.
I am doing an experiment today to see where the foam is coming from, I am thinking it is coming from the crank case breather but today will tell the tale. If not there it must be coming from the return line from the engine pump.
I am getting zero cam chest puking of oil with the tank vented, only condensate of water mist, like a light fog.