I just got a Mayhem RTR lst Saturday!! Let me just say WOW!! I have only had 1 day to break in the engine and partially tune it. But so far, it has tons more power than my Traxxas Rustler ever did. I question though. Once I tuned the top side to where I wanted it, then tuned the bottom side where I wanted it, the engine wants to race really high before dropping then dying. Sometimes it will just want to stay racing high. I took the needles back to factory and it still does the same thing. ANy ideas as to what I am doing wrong here?? There is still plenty of white/blue smoke being produced, so I don't have it too lean. Any ideas would really help! Thanks!