I don't know what the issue is with the Sportster rear wings, so please forgive me if I'm talking nonsense, but the cabrio failed the first IVA test because the radius of the edges of 'mudguards' (rear wings?) was less than 2.5mm, strangely the running boards were OK as the radius of 'glass fibre' need only be 1.5mm. The 'muguards' are only 4mm thick so the 2.5mm radius is not acheivable.
However the tester took the requirement for a greater radius for the mudgauards as having precedence.
So to be IVA compliant the thickness of the mudguards needs to be 5mm.
I passed the radius test after fitting some self adheasive beading around from front to back.
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