what about the oil breather?

My top hose (Rocket Cover LHS to Oil Breather) was blocked.The hose curved downwards below the height of the oil breather and the port on the rocker cover.

Also the other possibility - is it ACTUALLY coming out of the exhaust? At one point I had a tiny bit of oil dripping onto the exhaust which was burning and going under the car and it looked like it was coming out of the exhaust.

Probably neither of these, could just be the turbo but small things to try as you have tried the obvious.