If your track has holes, ruts, jumps ect. maybe your lucky to be running a chain, the weakest link breaks. I'd also think maybe you need to find a better track to run on. You state yourself that driveline and engine failures should be expected being the state of the track you run on, so how does that make a chain drive racecar a gokart ? Hmmmm Just in the past week I've been informed I'm not a real race fan, and now I find out I dont even own a racecar, lol. I wonder how the guys that spent close to 20 grand on a Henchcraft feel knowing that they paid for a racecar but got a gokart.