I bought the Rampage XT for my grandson for his birthday. Since the purchase I have had to replace the steering servo after only running the car for a total of 5 minutes. Well then I decided to put a remote kill switch on it. The first one that I received would not turn the car off. So I was sent another and it worked like it should. Finally get the car up and running for the first real play day and the steering servo gets to where it will barely turn the wheels. We played with it for a total time of 15 minutes. I am ready to sell this thing and move on to something else. Total frustration. Is the steering servo bad or is the battery going down?