sorry, ive come to this a bit late but some thoughts. since i bought the car (Vx dry sumped) it has lost oil into the breather pot from the swirl pot. after lots of experiements i came tot the conclusion that the swirl pot design was not what it should be hence allowing oil out and down into the breather. I ended up mounting the breather above the swirl to allow oil to run back down. at the moment it doesnt look pretty as i am using a plastic water bottle as a trial but if somebody could you manufacture me a nice shiny metal one to autoCAD drawings i would happily pay for the privilege.... It would have to be an odd shape (wedge) with an internal baffle to mount on the bulk head.
Mike