When I discovered a part on my BF-109 from CMP was missing an essential piece, I contacted Nitroplanes. They said told me my plane was out of warranty. I told them that it took me a while to discover one of the hindges was not manufactured correctly. And given you can't buy those kind of hindges anywhere (I've tried), this made me very upset. I finally contacted the parent company and they promptly mailed me a new set of hindges from China.

Bert