Ok that solves the mistery with the hole then, not sure how you mean both or one block breather? This evening ive had the kidney box of an cleaned that out , blown through all the breather hoses to check for blockages and drained the oil catch tank, seems ever so slightly better but im still looseing a lot of oil each time i use it.. Im thinking about uprating the breather system to a bailey one do you think this would help?