After doing a leakdown test on Sunday, I'm happy to say that the engine itself is absolutely fine, so I'm not getting blowby. That, coupled with absolutely no oil leaks, and the smoking on idle when hot, only leads me to believe that the turbo seals are on the way out. I still have my old CT9 in the shed, so I'll probably get that sent off to Liam at some point to make it minty fresh and rotated slightly to suit the zisco kit and my hot pipe, and then swap them round. Other than that, not much else has been happening. I think a RARB may be next on the list, and to start gathering the bushes needed to re-do the front suspension assemblies, make everything nice and tight.