https://www.youtube.com/watch?v=dC9OrVUw68c
why you have to make yourself,those CN rod are cheap enough
http://www.funflyrc.com/pd.jsp?id=907&_pp=0_312&pfc=%257B%2522lid%2522%253A1%252C%2522prgmid%2522%253A312%252C%2522kw%2522%253A%2522link%2522%252C%2522sc%2522%253A%257B%2522key%2522%253A%2522name%2522%252C%2522desc%2522%253Afalse%257D%257D&keyword=link