[Roadkill]

Sorry to say this, but digi-q's are faster. Anyway, while trying to catch up, i put in a higher power motor, (a 2.6 i think) and upped the voltage to 3v with a camera battery. Man was that cool while it lasted. I got pretty damn close to beating my friend, but whenever i turned the battery made that thing top heavy, and it flipped over. Also, it did a wheelie every time u pressed the accelarater. Anyways, i wanted to return it to stock so i put back in the old rechargeble battery, and it looks all right, except now when i press the accelerator it just sits. It's like it's straining to push it. When a i tap it, and hold the accelerator, the push gets is going and it runs ok. But if i stop it won't start again. Did i fry the electronics board? I have two that have the same problem and they are both special edition cars. Please help!