Could be a number of different things post your set up and I'm sure you will get plenty of advice. The biggest adjustment I've made is my driving style. Prior to this truck the only thing I had raced was my 1/8 e buggy, it had crummy on power steering so I always got a good run up then coasted threw corners. With this truck I had to learn to stay on throttle threw any corners that carried decent speed or the truck would do a quick 180. Last race my back end was loose so I moved the rear shocks all the way in on the tower and it helped but it could be a wide variety or combination of things. Remember when looking at online set UPS that they can be a good starting point but are based on track conditions and driving style. I would love to be able to give you some really good advice but I'm a rookie compared to most of the guys here. I can tell you that my current set up which I love came from hours of reading this thread. Good luck to you.