u/Automatic-Usual1010

I have this aftermarket wing I got for my car, the finish and appearance of it is very nice, however, it is hollow and apparently thin carbon, as I can squeeze the wing and it flexes a LOT. I bought this as an advertised track wing, but its not strong enough for street use IMO. I talked to the manufacturer and they said they are going to correct the issues and send a new one, however, if they don't, is there a way to make this current wing stronger?
I was thinking fill with high density foam and wrap with 2-3 more layers of carbon?
Any other suggestions to strengthen it in case I get stuck with this wing?