I just bought a nitro rustler from a guy, using this site. I had to buy a ez start system for the .18 sirio on my rusty because the guy said the pullstart was broken. When i installed the ez start system, it didnt move the piston at all. It seemed as if the motor didnt have enough power. Also the oneway bearing seemed to small. I got that part from the pullstart. I need help! I been working on this yesterday for 7 hours straight. Dunno wuts wrong. Plz help me fix my frist nitro car.