People are saying that the coating inside the shocks are coming off, thats not the case at all. I just finished building the kit and saw what people have been talking about. It's left over material from the plating process. In other words the shocks are dirty. All that has to be done is spray them well with car deagreaser and wip the left over residue. You can repreat the cleaning a couple of times to be sure. That should remove all the little shiny bits that make it feel rough.
That being said the suspension is super smooth thanks to those BIG BORE shocks, can't wait to get this car on the track