I haven't had a problem but saying that Mine hasn't done a lot of races yet but i've had a couple hard hits and they held up good so far. The one thing I did notice when I was building it was I had to do a lot of re-shaping with a hobby knife. to get them to even seat properly...
I also have a question I want more turn in, has anyone got any pointers on the front end setup and has anyone tried the option spring set??