I don't understand why you are having such shitty luck with oil surge. When I had my car on the dyno for tuning, did 6 - 7 pulls and my catch can was empty. I thought for sure it would be full but it wasn't. Don't give up, you will eventually figure it out.
Doesn't it have something to do with the fact that he's racing with lots of turns? I didn't think his problem was blowby.