i dont understand all these complaints, i have 6 redcats and they all started right away, i never broke a part except for this weekend on the lightning, my fault when i hit a divider on the track. I admit the clutch bell and spring are junk but once i changed these i have never had a problem. I find the engine that comes with the redcats very reliable and easily tuned. Only thing i have done is changed the glow plugs. I also do rutine maintaince on them like tighten the bolts and give them a once over. I am very happy with the redcats. I own many other brands and find they are all on the same level when it comes to problems