I converted my CEN Fun Factor MT2 into 2WD. I have Proline dirt hawg 2 buggy tires on the front and Proline Dirt Paw tires on the back. It hooks really great on grass and does ok on dirt. The really cool thing is that I can kill my cousin in a race with his Traxxas Nitro Sport and he even has a tuned pipe. The only thing is it doesn't shift into second gear and if it does I can't hear it , and it runs out of top speed too quick. Does anyone else have this problem and could anybody tell me what I could do, and if there isn't anything I could do does it hurt it to run like that I checked the temp and with it winding out like that it only runs arund 230-240 degrees. I would really apreciate your help thanks alot Jon