RE: HobbyKing ??
Most everything that HK sells is "reversed engineered" products of reputable companies. HK has no quality control, customer service or warrantees. They make their money from the shipping charges that they impose. I've heard far too many complaints from customers and too many praises from their paid shills.
They pay people to act like happy customers and praise their products, so I stay away from them and their junk.
Frank