Benjy, in studying the photographs of your beautifully restored S2, I noticed that you have the exact same tire to wheel opening relationship on the right side of your car as mine. That is to say, the gap between the tire and rear lip is significantly smaller than the gap in the front. On the left side of my car, the gaps are much more "pleasingly" arranged. I have been scratching my head over this for a couple of years now. My car even has the right side wheel tub scooped out for tire clearance. I have wonder if the car was hit or if our Hethel brethren assembled the panels incorrectly or God forbid, Specialised Mouldings sculpted the car non symmetrically.
Long story short, would you please post a direct side view picture of the left side of your car so that I can see the tire to opening situation?