Sorry for late reply been to Audi dealership North East (silverlink) ,talked to there-paint / body work specialist said my wing as yours have been repaired not from Audi but as there is rust present without penetration i would have no claim, basically,if they had rusted through they would look at it,the rust has to penetrating,to claim on 12 year warranty.
Thing to do now is contact Audi UK which he said to do but im not holding my breath.
Thinking now of getting new wings and getting done for peace of mind, but as its DTM model should i get genuine parts as i want car like new.
Anyone know where to get parts and fit them in North east area.