Like Sazzle said, all the edge of 3racing kit required CA seal. I don't know why but it seems 3racing's CF strength is not as high as Tamiya/Xray CF. It's quite easy to break off from edge. So you better seal it, not only for car, for your hand safty as well. Also, you better add shim on top of 2F plate motor mount screw hole. Mine is dent a bit already after 3mons use.
Functionality wise, I have no complain about 3racing kit. But the CF strength really need an improvement.