he said it was painted in 2k lad no lacquer involved.
if it won't shine scuff it and an other finish coat should shine it up nicely.
if it didn't shine after more paint the paint is not good and you'd need fresh paint.
there's one other thing , once i came across some 2k in orange and yellow and the stuff wouldn't shine at all no matter what (something not right in the paint) a clear coat of lacquer will sort it (was a full respray) in your case it might not match the rest of the car.