So its better to get a RTR, race it for 20 minutes just to have a poorly built diff fail, then have to go back to the hobby shop and pay someone to fix it because you have no idea whats going on inside your car. Its a frustrating situation I have seen over and over because we live in a world where everyone wants it right now and doesn't have the patience to do it right the first time. I agree RTRs bring several people into the hobby that we would not otherwise have. I also dont mind helping those guys at the track that have no idea what they are doing, but I think its a good idea to start lowering that number of guys that cant adjust their own pinion gears. Some people simply cant build a kit properly no matter if they take their time or not, and for them there will always be guys who "know it all" to help them out when they go buy a RTR.