Does anyone know of a company that does a manual for this vehicle..Haynes do a manual that covers the 100 and A6 May 91 to May 97 saloon and estate Petrol 1.8, 2.0, 2.3, Turbo diesel 1.9 and 2.5 it specifically says it doesn't cover the Quattro, S4 and S6. Really need help with regards the Quattro side of this vehicle any help gratefully received