based on the feedback from others and given their TSFI experience i popped the roc down to JKM given Stage 2 and standard plugs didn't seem to mix to well given they'd done over 30k and the 2nd service hadn't improved things and there aren't too many of us with TSI Stage 2 code at the moment
great guys to deal with given some initial contact with Keith, managed to squeeze me in at a couple of days notice
after some Irudiums, logging and gap closing the car is transformed
so cheers JKM and thanks to others who have sung their praises