WeatherB- Is the car built correctly? If it is all built properly with the stock setup you should not have any trouble with flipping in corners unless your running on a super high grip track (traction rolling). Are you sure its not a driving problem? Perhaps your just running the wrong lines? Watch the fast guys at your track, try and emulate them as best you can and ask them for driving tips on your track. I can tell you that my buggy with the stock setup will not flip while cornering on any surface.