I'm feeling your pain buddy. Just back from offshore and the car is telling me that a service is overdue so think my warranty could be buggered.
Have taken my missus and I up to Inverness for a weekend and on the way I threw a limp mode when pressing on through the twisties which I reset then when I arrived at the carpark there was a very pronounced rattle which I believe is the dreaded waste gate rattle. Gutted
Will be monitoring this thread to see how you get on with the adjustment fix as I can't be bothered replacing the turbos unless I upgrade to RB's.