keep your eye on the base of the oil filler neck and see if any oil appears there.
interested to hear if it does. reason I say as the forge catch can setup on mine caused back pressure from too small a pipe outlet/can inlet etc, and crank case pressure encouraged the oil out. It had some venting but too small. Blocked off completely however.. Only vent it out th eback into the turbo directly.. it has to vent somewhere.. and if more pressure will want to push out.. Worth checking the inlet to turbo periodically see how much oils entering there.