No I don't but I think I have figured it out with your help thank you. I made the breather cannister, as it is hard to get Cossie bits in Canada, and I copied one from my sons race car, which is normally aspirated, where I have two big pipes going into the cannister and one small pipe as a breather to atmosphere. TWO INTO ONE DON'T GO! The other clue is that it does not leak when idling only after using boost. Hope I haven't buggered up other seals on the block. We are going to disconnect the two big pipes and hang them under the car, wash the engine and give it some welly, I'll let you know what happens. Thank you once again.