I see from your build-up thread in the main section that you have finished off your car with the decals - I must say it looks great
It sounds like we both did the same with the wing buttons? I chamfered the bottom face of the 'wings' to the button part so that you dont wrinkle-up the sticker when you rotate it. I also temporarily stuck some masking tape to the underside of the wing prior to installing the wing wire to avoid scratching the paint... I assume also that you assembled the top & bottom parts of the plastic 'button' prior to feeding through the wire? Its all quite a tricky assembly job!