Ah! I had that...it was THE biggest POS I had ever owned. Check for radio glitches if it is stock. I had SO many problems with it, although I was only like 13 years old when I got it. It was my second nitro. According to the manual the engine should be 3/4 - 1 1/4 turns out from closed after broken in. If you no longer have the manual this should help. http://www.duratrax.com/pdf/dtxc0055-manual.pdf