Do you drive the car hard or AutoX it at all?
If you AutoX a lot, you could be blowing the oil through your PCV system. It's a common problem with boxer motors and can be solved with a catch can.
If you don't drive the car hard at all, and never really have, your piston rings might not be fully seated. Spend the next tank of gas or so when the car gets up to temp (not just coolant, but oil; say 7-10 miles) flog it hard whenever you can.
I had plenty of blow-by during break-in; the dipstick would pop out all the time. But now that it's out of break-in and I've been driving it hard now and then it stays seated. So the rings do need to seat on these engines, and lots of fun driving is the cure.
