Hi Steve.
Many thanks for taking the trouble to comment and advise. Much appreciated and I will endeavour to solve problem as you describe. I believe I have almost exhausted all other avenues. All best wishes. Keith.
RE: 1986 Audi Quattro Coupe 2226 cc Non Turbo. Tilt and remove sunroof seal. (on roof itself).
Reg. C90XFO. Vin. No. WAUZZZ85ZGA103982 Part No. 855877297-2AT
The seal on the above needs replacing. Problem sourcing. Any advice would be most welcome.